Q1 Earth Science_Module 2.pdf

Earth Science for STEM Quarter 1 – Module 2: Earth’s Subsystems CO_Q1_ESS SHS Module 2 Earth Science for STEM Alternative Delivery Mode Quarter 1 – Module 2: Earth’s Subsystems First Edition, 2021 Republic Act 8293, section 176 states that: No copyright sha...

Earth Science for STEM Quarter 1 – Module 2: Earth’s Subsystems CO_Q1_ESS SHS Module 2 Earth Science for STEM Alternative Delivery Mode Quarter 1 – Module 2: Earth’s Subsystems First Edition, 2021 Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio Development Team of the Module Writer: Rowena A. Lambongog Editors: Randie B. Atienza and Sally M. Evangelista Reviewers: Marionel U. Briz, Francia C. Silva, Adelina A. Fajardo, Raquel A. Diola, Cyrus T. Festijo, Rowena D. Cabanding Illustrator: Patrick Lemuel V. Reyes Layout Artist: Paulina S. Crescini Management Team: Francis Cesar B. Bringas Job S. Zape Jr. Ramonito O. Elumbaring Reicon C. Condes Elaine T. Balaogan Fe M. Ong-ongowan Sacoro R. Comia Fe M. Fallurin Marieta N. Perez Printed in the Philippines by ________________________ Department of Education – Region IV-A CALABARZON Office Address: Gate 2 Karangalan Village, Barangay San Isidro Cainta, Rizal 1800 Telefax: 02-8682-5773/8684-4914/8647-7487 E-mail Address: [email protected] Earth Science for STEM Quarter 1 – Module 2: Eath’s Subsystems Introductory Message This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson. Each SLM is composed of different parts. Each part shall guide you step-by- step as you discover and understand the lesson prepared for you. Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to self-check your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these. In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning. Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task. If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Thank you.  What I Need to Know This Lesson pertains to the learning competency that would engage the students to explain that the Earth consists of four subsystems, across whose boundaries matter and energy flow. The activities would enable the students to determine the four subsystems of the Earth and help them differentiate the subsystems based on their characteristics. Also, the activities would enable the students to explain how matter and energy flow in the subsystems. They would also be able to trace the flow of matter and energy across the subsystems. This would also help them to internalize the role of humans in the unstoppable flow of matter and energy in the subsystems. This would also help the students intensify their roles as stewards of each subsystem. The module contains discussions on Earth’s Subsystems and the flow of matter and energy in these subsystems. After going through this module, you are expected to: 1. identify the four subsystems of the earth; 2. distinguish the characteristics of each subsystem; 3. explain how matter and energy flow in the subsystems; and 4. trace the flow of matter and energy in the subsystems. 1 CO_Q1_ESS SHS Module 2  What I Know Read and analyze the following questions. Choose the letter that best answer the question. Write it on separate sheet of paper. 1. How is the hydrosphere distinct from the other subsystems? a. It gives food for living organisms. b. It offers shelter for land animals. c. It provides natural resources such as minerals and rocks d. It provides water for organisms which enable organisms to function properly. 2. The atmosphere serves as envelop which protects the earth. Which of the following is TRUE about atmosphere? a. It includes all flying organisms. b. It serves as the Earth’s blanket. c. It is affected by temperature and salinity. d. It is composed of the different landforms of the Earth. 3. How is biosphere different from the other subsystems? a. It is dependent only on hydrosphere and geosphere. b. It is composed of all living organisms. c. It is composed of soil, rocks, and minerals. d. It provides air which supports respiratory processes of living organisms. 4. The Agusan Marsh is a large wetland with many plants, animals, and microscopic organisms. Which part of the Earth’s subsystem includes the water in this wetland? a. Atmosphere b. Biosphere c. Geosphere d. Hydrosphere 5. Why are hydrosphere and geosphere involved in the given scenario below? “Flooding moves soil and rock to new places.” a. Flood, soil, and rock are components of hydrosphere. b. Soil is part of geosphere while rock is a part of hydrosphere. c. Flood is a component of hydrosphere while soil and rock are components of geosphere. d. Flood is a part of geosphere while soil is a component of biosphere. 6. What is the reason why the atmosphere is essential to life? a. It only provides blanket the covers the ears the earth’s surface. b. It solely gives oxygen and carbon dioxide. c. It regulates the earth’s temperature over a period of time. d. It provides the gases essential to life and for organisms to perform bodily processes. 2 CO_Q1_ESS SHS Module 2 7. What subsystem interacts when a rice plant draws water and nutrients from the soil? a. Atmosphere, Biosphere and Geosphere b. Biosphere, Hydrosphere and Geosphere c. Geosphere, Atmosphere and Biosphere d. Hydrosphere, Atmosphere and Geosphere 8. Why are the subsystems interconnected to each other? a. They have the same composition and characteristics. b. They can alter the flow energy in a minimal amount. c. They work together to influence the climate, trigger geological processes, and affect life all over the Earth. d. They are all composed of living things that influence the flow of matter. 9. Oceans cover almost the entire Earth’s surface. How does it contribute to Earth’s habitable condition? a. It absorbs and redistributes solar radiation. b. It absorbs and replenishes solar radiation. c. It protects and absorbs solar radiation. d. It protects and adsorbs solar radiation. 10. Analyze the ecological phenomena given below. Which of the given situations shows the interaction between hydrosphere and atmosphere? a. Evaporating water b. Pouring rain c. Flowing stream d. Drinking water 11. What is the reason why geosphere is important? a. It provides the environment for all living things to live in and survive. b. It is the physical sphere that is made up of only molten rock and other materials. c. It sustains proper amount of water. d. It regulates the internal and external heat of the earth. 12.Plants use sunlight, water and carbon dioxide during photosynthesis. Which of the following subsystems are interacting during this process? a. atmosphere, biosphere, and hydrosphere b.atmosphere, biosphere, and geosphere c. atmosphere, hydrosphere, and geosphere d.hydrosphere, geosphere, and biosphere 3 CO_Q1_ESS SHS Module 2 13. Taal Volcano spews gases and ashes into air. How does this scenario affects the atmosphere? a. It decreases the air pressure in the area. b.It increases the humidity in the area near the volcano. c. It lessens the atmospheric temperature in the area. d.It affects the amount of gases in the atmosphere through its emitted gases. 14. Water availability impacts the growth of animals like cows which depend on plants for food. B a s e d o n t h e g i v e n s i t u a t i o n , w hich of the following subsystems are involved in this situation? a. Atmosphere and Biosphere b.Hydrosphere and Biosphere c. Hydrosphere and Geosphere d.Atmosphere and Hydrosphere 15. Analyze the given situations below. Which of it shows an interaction between geosphere and atmosphere? a. Water evaporating from the soil b. Bacteria converting nitrogen to ammonium c. Plants undergoing the process of transpiration d. Rocks undergoing the process of weathering due to flood 4 CO_Q1_ESS SHS Module 2  Lesson 2 Subsystems of the Earth Earth is the third planet from the sun and considered as haven for many life forms. As a closed system, it serves as harbor of life for billions of years and still continue to comfort innumerable life forms. Thus, Earth itself has different systems that interact with other to provide all the necessities in order for life to continue to prosper. What’s In Analyze the given illustration below and answer the following questions. Write the answer on a separate sheet. Figure 1. A Terrarium Guide questions: 1. What are the components of the terrarium? 2. Give the functions of each component in the terrarium that enable life to sustain on it. 3.How can you compare the terrarium to an Earth system 5 CO_Q1_ESS SHS Module 2  Notes to the Teacher This module is a self-assisted module however your help is necessary in monitoring and evaluating students work. Make sure that the students completely accomplish all the activities to ensure high quality transfer of learning in this module. What’s New Listed below are the words associated to the different Earth’s subsystem. Highlight them in the Word Hunt Box, then, answer the guide questions that follows. Write your answer on a separate sheet. SUN WATER SOIL ICE DEW HYDROSPHERE ATMOSPHERE LITHOSPHERE VAPOR LIFE SAND RAIN MOUNTAIN BIOSPHERE TREE 6 CO_Q1_ESS SHS Module 2 Guide Questions: 1. How are the words associated to each other? _______________________________________________________________________________ 2. In which subsystem are the words connected? _______________________________________________________________________________ 3. How can you say that the highlighted words are related to subsystems? ________________________________________________________________________ What is It Earth’s Subsystems and the Flow of Matter and Energy Earth is a complex system of interrelating physical, chemical, and biological processes. It is a system in which sets of interconnected components are interacting to form a unified whole. Earth is comprised of four major smaller systems known as subsystems. These are also called as spheres of the Earth. These are the atmosphere, geosphere, hydrosphere, and biosphere. Atmosphere serves as the Earth’s blanket. Its name rooted from the Greek word atmos which means gas and sphaira which means globe or ball. It is composed of gases in varying amount and its relative abundance is also crucial in different parts of the earth. The air in the atmosphere is generally composed of 78% nitrogen, 21% oxygen, 0.9% argon and the remaining 0.10% is made up of different trace gases and vapor. It serves as the Earth’s protection form harmful UV rays and keeps the planet warm through greenhouse gasses. Atmosphere is affected by the Earth’s gravity, so this is the reason why as the altitude increases the amount of gases in the atmosphere decreases. It is composed of layers namely: troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Geosphere comes from the Greek word geos meaning ground. It pertains to the solid part of the earth. It is divided in to three layers such as the crust, mantle, and the core. It is composed of naturally occurring solid aggregate of minerals, organic material or natural glass called rocks. It is also composed of loose particles of rocks that enveloped the surface of Earth called regolith. It contains all the soil, rocks, and minerals present in the crust to the core of the Earth. It comprises the geologic landforms such as mountains and hills. Hydro is a Greek word which means water. Hydrosphere is composed of all the water on Earth in any form. This includes ice, water vapor and liquid water. The permanently frozen part of this subsystem is called cryosphere. Earth is the only planet in the solar system that are known to contain water in all three phases. 7 CO_Q1_ESS SHS Module 2  Water on Earth is constantly and consistently moving because of temperature and salinity. It also plays an important role in absorption and redistribution of solar radiation. Biosphere came from the Greek word bios meaning life. It is composed of all living things and the areas where they are found. It includes all animals, microbes, and plants. It extends to the upper areas of the atmosphere where insects and birds can be found. It also extends to the deep parts of the oceans where marine organisms can still survive. It is also in this zone that the interaction between the different subsystems is most dynamic. In biosphere, each organism plays an important role to the food web. If one is lost the others will be affected. Matter and energy flows and cycle between the four subsystems to sustain and make life on Earth possible. Both of it can flow across the boundaries between each subsystem. The geosphere is where the rocky part of the earth is in contact with water, air, and life. It is also generally where the spheres intersect and affect each other. The processes that move matter and energy from one sphere to another is called as sphere interactions. Changes in any sphere greatly affect the other spheres as well since all the spheres are interconnected system. Figure 2. Earth’s Subsystems The four subsystems are closely linked through the biogeochemical cycles which involves biological, geochemical, and chemical factors. These cycles are alleyways by which substances move through biotic which is the biosphere and abiotic which is the geosphere, atmosphere and hydrosphere, components of Earth. It allows the circulation of important nutrients that form and support life like carbon, oxygen, nitrogen, phosphorus, calcium, and water. It also maintains the balance of 8 CO_Q1_ESS SHS Module 2 substances in the different subsystem of the Earth. Any interference and disturbances in the flow of matter and energy may cause damage to any of the subsystems and its components. What’s More A. Direction. Identify the numbered figure below and give the subsystem it represents. Write your answers in a separate sheet of paper. Figure Subsystem 1 2 3 4 5 9 CO_Q1_ESS SHS Module 2  A. Write T if the statement is true and F if the statement is false. If false, identify the word/words that make the statement incorrect. _____________1. Earth is a multi-part system of interrelating physical, chemical, and biological processes. 2. Atmosphere serves as the solid part of the Earth. 3. Biosphere is considered as the life zone of the Earth. 4. Earth is a dynamic entity with various separate but highly interrelating subsystems. 5. Hydrosphere includes all water on the Earth’s surface only. 6. Earth can sustain and flourish life form due to its components. 7. Matter and energy flows and cycle between the two subsystems to sustain and make life on Earth possible. 8. Changes in any sphere greatly affects the other spheres. 9. Any disturbance and interference in the flow of the matter and energy does not affect any of the subsystems. 10. Both the biotic and abiotic components of the earth interact with each other in the biosphere. What I Have Learned A. Using the flow chart , identify the subsystems interacting in the carbon and oxygen cycle shown in the picture below. Write your answers in a separate sheet of paper.. Figure 4. Carbon-Oxygen Cycle 10 CO_Q1_ESS SHS Module 2 B. Fill in the blanks with the correct word or phrase to complete the discussion of the carbon and oxygen cycle in which matter and energy flows from one subsystem to another. Choose your answer from the word pool below. Plants Animals Digestion Metabolism Inhale Photosynthesis Respiration Mining Element Exhale In the process of (1) ____________________, atmospheric carbon is absorbed by plants. This carbon is transferred from (2) ____________________ to the (3) ____________________ feeding on them, and further moves up the food chain. (4) ____________________, (5) ______________________, and (6) ____________________ of plants and animals result in some transfer of carbon back to the atmosphere. Some of these living beings buried millions of years ago have been converted to fossil fuels. (7) ______________________ and burning fossil fuels can cause this carbon to move from the lithosphere to the atmosphere. Some of this atmospheric carbon gets dissolved in the oceans and thus, completes the cycle. Oxygen is naturally occurring in the air. Oxygen is also considered as the most common (8) _____________________ of the human body. It plays a vital role in life forms. This also serves as an essential element in different biomolecules. All aerobic organisms use free oxygen for respiration. They (9) __________________ oxygen from the environment and use it in the process of respiration while (10) ____________________ carbon dioxide. All green plants use carbon dioxide during the process of (11) ___________________ and release oxygen back into the atmosphere as a by-product. Animals exhale carbon dioxide back into the atmosphere which is again used by the plants during photosynthesis. Now oxygen is released back to the atmosphere. What I Can Do Make a concept map on how the four subsystems are connected. Use the word at the center as your reference point. Refer to the rubrics below as your reference in writing your ideas. Category 4 3 2 1 Content It shows an It has some It has many It does not understanding mistakes in mistakes in show of the topic’s terminology or terminology understanding concepts and shows a few and shows a of the topic’s principles and misunderstandings lack of concepts and uses of concepts. Few understanding principles. It appropriate misconceptions are of many has many terminology evident concepts. misconceptions. and notations. Some There is no misconceptions misconceptions are evident. 11 CO_Q1_ESS SHS Module 2  or errors evident Category 4 3 2 1 Organization It is well It is organized and It is somewhat It is confusing of ideas organized in a easy to follow. organized and and misleading. logical format. incoherent. Number of At least 25 At least 20 At least 15 At least 10 pertinent pertinent pertinent words pertinent pertinent words words words were were used words were were used used used Hierarchical All concepts Most concepts are Some concepts Few concepts structure are connected connected in a are connected are connected in a hierarchical in a in a hierarchical structure leading hierarchical hierarchical structure from complex to structure structure leading from specific concepts. leading from leading from complex to complex to complex to specific specific specific concepts. concepts. concepts. Accuracy of All the Some concepts are Few concepts The concepts relationship concepts are significant and are significant are given are of words significant and accurately related and accurately not related to accurately to each other. related to each each other. related to each other. other. Total Score Assessment Multiple Choice. Read and analyze the following questions below. Write the letter that best answer each question. Write your answer in a separate sheet of paper. 1. Earth is made up of landforms like mountains and hills. Which subsystem do mountains and hills belong? a. Atmosphere b. Biosphere 12 CO_Q1_ESS SHS Module 2  c. Geosphere d. Hydrosphere 2. Why is biosphere important to biodiversity? a. It provides gases needed for respiration. b. It prolongs life on earth through the circulation of proper amount of water. c. It has vital role in climate change. d. It is home to biodiversity within ecosystems and provides a reliable source of food. 3. Oceans cover almost the entire Earth’s surface. How does it contribute to Earth’s habitable condition? a. It protects and absorbs solar radiation. b. It protects and absorbs solar radiation. c. It absorbs and redistributes solar radiation. d. It adsorbs and replenishes solar radiation. 4. How is biosphere different from the other subsystems? a. It is dependent only on hydrosphere and geosphere. b. It is composed of all living organisms. c. It is composed of soil, rocks, and minerals. d. It provides air which supports respiratory processes of living organisms. 5. Analyze the given situations below. Which of i t i s an interaction between geosphere and atmosphere? a. Bacteria converting nitrogen to ammonium b. Plants undergoing the process of transpiration c. Rocks undergoing the process of weathering due to flood d. Water evaporating from the soil 13 CO_Q1_ESS SHS Module 2 6. Which of the following is TRUE about hydrosphere? a. It includes organisms. b. It serves as the Earth’s blanket. c. It is affected by temperature and salinity. d. It is composed of the different landforms of the Earth. 7. Why are hydrosphere and geosphere involved in the given scenario below? “Flooding moves soil and rock to new places.” a. Flood, soil, and rock are components of hydrosphere. b. Soil is part of geosphere while rock is a part of hydrosphere. c. Flood is a component of hydrosphere while soil and rock are components of geosphere. d. Flood is a part of geosphere while soil is a component of biosphere. 8. Taal Volcano spews gases and ashes into air. How does this scenario affect the atmosphere? a. It decreases the air pressure in the area. b. It increases the humidity in the area near the volcano. c. It lessens the atmospheric temperature in the area. d. It affects the amount of gases in the atmosphere through its emitted gases. 9. Why is the atmosphere essential to life? a. It only provides blanket the covers the earth’s surface. b. It solely gives oxygen and carbon dioxide. c. It regulates the earth’s temperature over a period of time. d. It provides the gases essential to life and for organisms to perform bodily processes. 14 CO_Q1_ESS SHS Module 2 10. What subsystem interacts when a rice plant draws water and nutrients from the soil? a. Biosphere, Atmosphere and Geosphere b. Geosphere, Atmosphere and Biosphere c. Biosphere, Hydrosphere and Geosphere d. Geosphere, Hydrosphere and Atmosphere 11. Which of the following situations show the interaction between hydrosphere and atmosphere? a. Drinking water b. Flowing stream c. Freezing water d. Pouring rain 12. Why is geosphere important? a. It provides the environment for all living things to live in and survive. b. It is the physical sphere that is made up of only molten rock and other materials. c. It sustains proper amount of water. d. It regulates the internal and external heat of the earth. 13. Plants use sunlight, water, and carbon dioxide during photosynthesis. Which of the following subsystems are interacting during this process? a. biosphere, atmosphere, and hydrosphere b. biosphere, atmosphere, and geosphere c. geosphere, atmosphere, and hydrosphere d. geosphere, hydrosphere, and biosphere 14. Water availability impacts the growth of animals like cows who depend on plants for food. Which of the following subsystems are involved in this situation? a. Atmosphere and Biosphere b. Hydrosphere and Biosphere c. Hydrosphere and Geosphere d. Atmosphere and Hydrosphere 15 CO_Q1_ESS SHS Module 2  15. Which of the following events show an interaction between geosphere and hydrosphere? a. Bacteria converting nitrogen to ammonium b. Plants undergoing the process of transpiration c. Rocks undergoing the process of weathering due to flood d. Water evaporating from the soil Additional Activities Read the statement below and answer the questions that follow. Write your answers in a separate sheet of paper. These past few years, Philippines experienced devastating calamities that cause many casualties in different areas. Strong typhoons that cause flash floods, mud slides and storm surges in the areas of Rizal, Leyte, and Samar clearly manifested that the climate change is real. Using the knowledge that you have learned on the interactions of Earth’s subsystems, what simple ways can you do to mitigate the hazards of natural calamities? Explain your answer. Refer to the rubrics below as your reference in writing your ideas. SOLUTIONS TO MITIGATE THE PROBLEM IN THE POSSIBLE HAZARDS OF GIVEN SITUATION RESULTS NATURAL CALAMITIES 16 CO_Q1_ESS SHS Module 2 Rubrics: Category 5 4 3 2 1 Content The problem The problem The problem The The was correctly was correctly was correctly problem problem identified and identified and identified and was was fixated on the somehow somehow correctly incorrectly main issue. All fixated on the fixated on the identified identified. the solutions main issue. main issue. and The were clearly All the Some of the somehow solutions stated. All the solutions were solutions and fixated on about the results are clearly stated. results given the main problem precise and All the results were clearly issue. Few and results valid. are precise stated, precise solutions given were and valid and valid. and results not precise were and clearly invalid. stated, precise and valid. Organization of The ideas and Some ideas Few ideas and Few ideas All ideas ideas concepts are and concepts concepts are and and precisely are vague but vague and concepts concepts organized in a in a logical unorganized are are logical format format but but not incoherent incoherent and easy to easy to follow. misleading. and and follow. misleading. misleading Focus and There is one There is one There is one There is The topic details clear, well clear, well topic and more than and main focused topic focused topic content. Main one focus ideas are and content. and content. ideas are of topic not clear. Main ideas are Main ideas are somewhat and clear and are clear but are clear. content. well supported not well Main ideas by detailed and supported by are vague accurate detailed and not information. information. detailed. Total Score: 17 CO_Q1_ESS SHS Module 2  Module 2 CO_Q1_ESS SHS 18 Assessment What I Have Learned 1.C 1.1. Photosynthesis 2.D 2.2. Plants 3.C 3.3. Animals 4.B 4.4. Respiration 5.D 5.5. Digestion 6.C 6. Metabolism 7.C 7. Mining 8.D 8. Element 9.D 9. Inhale 10.D 10. Exhale 11.C 11. Photosynthesis 12.A 1. 13.B 14.A 15.B 16.C What I Know What's In What’s More 1. 1. D 1. 1. Water A.1. Fish-Biosphere 2. 2. B 2. 2. Ice 2. Seaweed-Biosphere 3. 3. B 3. 3. Sand 1. 3. Rocks-Geosphere 4. 4. D 4. 4. Mountain 2. 4. Seaweed- Biosphere 5. 5. C 5. 5. Rain 3. 5. Water-Hydrosphere 6. 6. D 6. 6. Dew 4. 7. 7. B 7. 7.Tree B. 1. T 8. 8. B 8. 8.Air 2. F – solid 9. 9. A 9. 9.Wind 3. T 10. 10. A 10. Clouds 4. T 11. 11. A 5. F-only /surface only 12. 12. A 6. T 13. 13. D 7. F- two 14. 14 B 8. T 15. 15. A 9. F-does not 10. T Answer Key References Brainly. Agusan Marsh. Accessed May 21, 2020. https://brainly.ph/question/3708184. Britanica Encyclopedia. Biogeochemical Cycle. Accessed 21, May 2020. https://www.britannica.com/science/biogeochemical-cycle. Britanica. The importance of the Biosphere. Accessed May 21, 2020. https://www.britannica.com/science/biosphere/The-importance-of-the- biosphere. Britanica Encyclopedia. Biogeochemical Cycle. Accessed 21, May 2020. https://www.britannica.com/science/biogeochemical-cycle. Britanica. The importance of the Biosphere. Accessed May 21, 2020. https://www.britannica.com/science/biosphere/The-importance-of-the- biosphere. BYJU’s. Oxygen Cycle. Accessed 21, May 2020. https://byjus.com/biology/oxygen- cycle-environment/ - cycles/a/introduction-to-biogeochemical-cycles. BYJUS. Importance of Hydrosphere. Accessed May 21, 2020. https://byjus.com/physics/importance-of- hydrosphere/#: ~:text= The%20major%20importance%20of%20the, present%20on%20the% 20Earth's%20surface. Earth System Research Laboratory. Accessed 21 May 2020. https://www.esrl.noaa.gov/gmd/education/info_activities/pdfs/T BI_earth_spheres.pdf. Earth’s 4 Major Geological Subsystems.Accessed May21,2020. https://study.com/academy/practice/quiz-worksheet-earth-s- geological- subsystems.html eSchooltoday. How do the Earth’s Spheres Interact? Accessed 21, May2020. https://eschooltoday.com/learn/interaction/. Examveda. Accessed May 21, 2020. https://www.examveda.com/what- is-the- ecological-system-integrating-all-living-beings-and-their- relationships-86060/. Khan Academy. Introduction to Biogeochemical Cycle. Accessed 20, May 2020. https://www.khanacademy.org/science/biology/ecology / biogeochemical Khan Academy. The Carbon Cycle. Accessed 20, May 2020. https://www.khanacademy.org/science/biology/ecology/biogeochemica l-cycles/v/carbon-cycle. Lee, Kevin. How Do the Earth’s Four Subsystems Work Together? 19 CO_Q1_ESS SHS Module 2  Accessed 21 May 2020. https://eductaion. Seattlepi.com/earth’s- four-subsystems-work- together-4634.html. Medina, Marileah. Earth System and Subsystems. Accessed May 21, 2020. https://slideshare.net/maleigh/grade-11-earth-life-science- earth-systems- subsystems. National Geographics Society. Earth’s Systems. Accessed May 21,2020. https://www.nationalgeographic.org/article/earths-systems/ National Ocean Service. What is the Carbon Cycle? Accessed 21 May 2020 https://oceanservice.noaa.gov/facts/carbon-cycle.html Quipper. Earth: the Four Subsystem. Accessed May 21, 2020. https://learn.quipper.com/en/topics/57c572549fb7b1001200167 6/lessons/1/chapters/1 Ritter, Michael E. The Physical Environment: An Introduction to Physical Geography. Accessed 21 May 2020. https://www.earthonlinemedia.com/ebooks/tpe_3e/title_page.ht ml. Socratic Q & A. What is the biosphere? Accessed May 21,2020. https://socratic.org/questions/58dc46c77c 014919465c4a52 Thatquiz. Earth’s Spheres Test Modified. Accessed May 21, 2020. https://www.thatquiz.org/tq/preview?c=zivch8ch&s=ol3bu8. The Oxygen Cycle. Accessed 21, May 2 0 2 0. https://mocomi.com/the-oxygen- cycle/ UNCAR. Center for Science Education. Accessed May 21, 2020. https://scied.ucar.edu/learning-zone/earth-system/geosphere. 20 CO_Q1_ESS SHS Module 2 For inquiries or feedback, please write or call: Department of Education - Bureau of Learning Resources (DepEd-BLR) Ground Floor, Bonifacio Bldg., DepEd Complex Meralco Avenue, Pasig City, Philippines 1600 Telefax: (632) 8634-1072; 8634-1054; 8631-4985 Email Address: [email protected] * [email protected]