A second-grader comes up to you and says, “We just learned that the sun made all the stuff in my lunch.

A second-grader comes up to you and says, “We just learned that the

sun made all the stuff in my lunch. But my lunch was a tuna sandwich.- some bread, and tuna with mayo!”
Using language a second-grader would understand, explain how the sun
was the original source of the energy in the tuna sandwich.

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