Name two energy sources that you would consider to be renewable. Give reason for your choices.

Explanation

Two renewable energy sources are:
(a) Sun: The energy derived from the sun is called solar energy Solar energ is produced by the fusion of hydrogen into helium, fusion of helium into other heavy elements, and so on. A large amount of hydrogen and helium is present in the sun. So, solar energ can replenish on its own. The sun has 5 billion years more to burn. Hence, solar energy is a renewable energy source.
(b) Wind: Wind energy is derived from air blowing with high speed. Wind energy is harnessed by windmills to generate electricity. Air blows because of uneven heating of the earth. Since the heatingof the earth shall continue for ever, wind energy shall also be available for ever.