Earth Science: Characteristics Necessary for Life PDF

Earth science Module 1 Characteristics of earth necessary to support life Hello class!  1. identify the different factors necessary to support life in a planet. 2. describe the characteristics of Earth necessary to support life. 3. explain how ach characteristic...

Earth science Module 1 Characteristics of earth necessary to support life Hello class!  1. identify the different factors necessary to support life in a planet. 2. describe the characteristics of Earth necessary to support life. 3. explain how ach characteristic affect life on Earth. Objectives What are the factors that made presence of life on earth possible ? What are the factors that made presence of life on earth possible ? 1. Temperature 2. Water 3. Atmosphere 4. Energy 5. Nutrients. 1) Temperature Temperature It influences how quickly atoms, molecules or organisms move. Low temperature slows down chemical reaction and produces ice that makes liquid water unavailable. High temperature can cause break down of important biological molecules. In Earth's condition, temperature is just right to support life. 2) Water Water It is one of the important ingredients in the different biological processes. Absence of this will interfere reactions necessary for life. However, salid form ofthis will also hinder living organisms to use it. Water on Earth has different forms. It is solid (ice) in the two poles and liquid along the equator which allows fiving organisms to consume it. 3) Atmosphere Atmosphere It provides significant insulation or shielding from the sun and impact of small to medium size meteorites. Greenhouse gasesi Lke carbon dioxide (CO2) and methane (CH4) trap heat and protects our planet from freezing. Moreover, ozone (03) layer shields the Earth's surface from harmful UV radiation. Atmosphere also provides chemicals needed for life, such as nitrogen and carbon dioxide. The size of the planet and its distance from the sun affects its ability to hold significant amount of atmosphere. Earth has a right size and distance from the sun that permits it to have a right amount of atmosphere. The presence of gravity also helps in sustaining its atmosphere 4) Energy Energy Earth has available energy-rich sunlight to support life. Living organisms like plants and photosynthetic bacteria use light as the source of their energy. Some chemosynthetic organisms rely on chemical energy to support various biological processes. 5) Nutrients Nutrients It is an essential factor used to build and maintain organism's body structure Insufficient or absence of nutrients can impede synthesis of the different biological molecules. In our planet, there are processes that recycle nutrients. Water, carbon and oxygen, phosphate and nitrogen cycles are some of the examples. Volcanism also helps in cycling the nutrients,  Thank you for reading!