Environmental Science - Marwadi University PDF

1  Subject Code: 04BE0141 Subject Name: Environmental Science BBA Semester – I Dr. Debleena Bhattacharya Cabin Location: MA358 Mob.No.-9934371312 [email protected]...

1  Subject Code: 04BE0141 Subject Name: Environmental Science BBA Semester – I Dr. Debleena Bhattacharya Cabin Location: MA358 Mob.No.-9934371312 [email protected] UNIT - 1 What is the Environment? ❑ The word Environment is derived from the French word “Environ” which meaning “surrounding.” An ecosystem refers to all the living and the non-living things present in the environment and it is a foundation of the Biosphere, which determines the health of the entire planet earth. ❑ An Environment is everything that is around us, which includes both living and nonliving things such as soil, water, animals and plants, which adapt themselves to their surroundings. It is nature’s gift that helps in nourishing life on the earth. The components of the environment are mainly divided into two categories. Biotic environment–It includes all living organisms such as animals, birds, forests, insects, reptiles and microorganisms like algae, bacteria, fungus, viruses, etc. Abiotic environment– It includes all non-living components such as air, cloud, dust, land, mountains, rivers, temperature, humidity, water, water vapor, sand, etc. Importance of Environment Environment plays an important role in healthy living and the existence of life on planet earth. Earth is a home for different living species and we all are dependent on the environment for food, air, water, and other needs. Therefore, it is important for every individual to save and protect our environment. Impact of Human Activities on the Environment There are different types of human activities which are directly attributed to the environmental disasters, which include- acid rain, acidification of oceans, change in the climate, deforestation, depletion of an ozone layer, disposal of hazardous wastes, global warming, overpopulation, pollution, etc.