1. Define:
(a) Biodegradable materials (b) Non-biodegradable materials (c) eco-system
2. Why
are some substances biodegradable and some non-biodegradable?
3. Give
any two ways by which biodegradable substances would affect the environment.
4. Give
any two ways by which non-biodegradable substances would affect the
environment.
5. Give
an example of an eco-system of pond.
6. What
is food chain? Give an example of detritus food chain.
7. What
is food web? Give an example of it.
8. What
is the role of decomposers in an eco-system?
9. What
are tropic levels? Give an example of food chain and state the different
tropical levels in it.
10. What
do you understand by unidirectional flow of energy?
No comments:
Post a Comment