Question

Fill in the blanks with appropriate words.
1.................. energy is stored in photo-sensitive cells.
2................. is used to operate flour mills.
3. Wind, water, sun are..................sources of energy
4. Use of low energy bulbs like..............
saves energy
5. Coal and petroleum take......................
years to be formed.
​

Answer 1

1=the,2nd=the ,3rd=the, 4th= voltage ,5th=fuel

Answer 2

Answer:

1st - chemical

2nd -

3rd - Alternative

4th - LED

5th - Millions