Question

B. Fill in the blanks.
1. Sound travels in the
and reaches our ears.
2. Energy is the ability to do
3. Plants make food by using
energy
4. Wood, coal and petrol are examples of
5. The use of
sources of energy pollutes air.​

Answer 1

Answer:

1.air

2.work

3.sunlight

4.fossil fuels

5.non renewable

Answer 2

Answer:

1.air

2.work

3.solar energy

4. fossil fuels

5.