Suppose you wanted to lift a heavy rock with a lever would you place the fulcrum near rock or near the part of the layer where you are pushing

I would place the fulcrum near the layer I was pushing on.

Explanation:

If you want to push a rock with a lever, you must pay attention to the correct place where you will place the support point.

If you place this support point near the rock, you will not be able to push it effectively. In that case, you will only be able to press the rock surface without actually moving it. However, you must position the fulcrum close to the layer you want to push into, so that you will provide enough momentum to move the rock efficiently.

the fossil record provides evidence of a common ancestor to many species.