Question

what evidence supports the law of conservation of energy?
○ mechanical energy is converted to chemical energy during photosynthesis.
○ oxygen is made from the breakdown of carbon dioxide during photosynthesis.
○ energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis.
○ the sun gives off light energy that is absorbed by plants.

Explanation:

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. The option "Energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis" shows the transformation of light energy (absorbed by chlorophyll) into chemical energy, which supports the conservation of energy as energy is being transformed, not created or destroyed. The other options: "Mechanical energy is converted to chemical energy during photosynthesis" is incorrect as photosynthesis uses light energy, not mechanical; "Oxygen is made from the breakdown of carbon dioxide during photosynthesis" is about matter (oxygen production) not energy conservation; "The sun gives off light energy that is absorbed by plants" is about energy transfer but not transformation in a way that shows conservation (it's just absorption, not transformation into another form within the system related to conservation evidence here).

Answer:

Energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis.