1.The ------ is the source  of all energy.

2. What does the environment consists of?

3. Green plants produce their own food  by a process  called ---------- .

4. Living beings depend on each other for their --------

5.Living beings are divided into ------ categories

6. ------- is defined as the capacity to do work.

7. ------- energy helps us to see things around us.

Coal, oil and gas are called -------- fuels.

8.--------- was a zoologist introduced food web in 1927

9. Is wind renewable or non-renewable sources of energy?

10.-------- energy gives us heat and light.

Wind and hydel energy are used to produce --------

12. Bacteria and fungi are scavengers

13.Consumers who feed on dead plants and animals.

14.Animals that eat only plants-------

15. Any Food chain starts with  the ----------