What is source of energy?

A source from which energy is obtained and used for different purposes. Some energy is obtained directly from the source and some energy are converted and than used.

Explanation: There are various sources of energy such as solar energy, wind energy, thermal energy and tidal energy etc.

The energy which is obtained from the sun by using collecting devices such as solar panels is called solar energy.

The energy which is obtained from wind is called wind energy.

The energy which is extracted from heat and tides are thermal and tidal energy, respectively.

answer; /// i believe the correct answer is (reactants);