Answer:
Sedimentary rocks
Explanation: Where are fossils found? Fossils are found almost exclusively in sedimentary rocks—rocks that form when sand, silt, mud, and organic material settle out of water or air to form layers that are then compacted into rock. So the answer will be <em>Sedimentary</em> rocks.
I would say potential energy only! Wait for other answers just to be sure though!
Answer:
Enzymes are special proteins that increase the rate of a reaction by decreasing the amount of energy needed to get a reaction started.
The light switch on the bottom usally
I believe the Endoplasmic reticulum since it is responsible for protein transport