Question

What is the primary source of energy in a food chain?

oxygen
sun
carbon dioxide
water

Answer 1

The Sun is the primary food source of energy in a food chain.

Answer 2

The sun is the primary source of energy in a food chain.

Step-by-step explanation:

By having sun light shining directly onto plants, it causes the plants to produce chemical energy that is able to sustain all their cellular functions.

Hope this helps! :)