What proof do we have that life has changed over millions of years

Fossils are the remains of long-dead organisms, preserved in rock. Because rocks are laid down in layers, one on top of the other, the fossil record is generally set out in date order: the oldest fossils are at the bottom. Running through the fossil record makes it clear that life has changed over time.

Explanation:

Could I have brainliest? I just need one more to level up.

Plants don't need "food" to function. They use sun light/photosynthesis and minerals from the soil to make the sugars they need in order to grow and survive. Animals are not at all like plants (Due to the fact that animals can't use sunlight to produce the energy that they need to live), so they need to take in organic/physical sources of energy in order to function. So that's one reason why animals eat, and plants don't. :P