iii). Answer the following in one sentence.
1. What is meant by environment?
2. What are the two components of the environment?
3. What is the biosphere?
4. Define ecosystem.
iv). Answer the following questions in brief.
1. Enumerate the main differences between the two main components of the environment.
2. What do you understand by global and regional ecosystems?
3. Why do you think human beings need to work towards sustainable development?
4. How are autotrophs different from heterotrophs?
5. How can we create a sustainable society?
5. What leads to global warming?
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Answer:1. What is meant by environment?
Environmental pollution may be defined as an undesirable change in the physical, or biological aspects of environment which makes it harmful for humans, for other living organisms, and for cultural assests.
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