How does energy from the sun become part of a food chain? It is taken in by secondary consumers when they graze on the grass.
It is absorbed through the skin of the tertiary consumers as they hunt.
It is released when decomposers break down dead or rotting matter.
It is used by producers at the bottom of the food chain to produce food.

It is used by producers at the bottom of the food chain to produce food.

Explanation:

The Sun's energy is needed for plants to make food through a process called photosynthesis. In photosynthesis, green plants capture the Sun's energy. They use it to make sugars from water and carbon dioxide. ... The plant is then fed to the next part of the food chain.

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