It has more similarity to fossils in layer A than layer D.
Answer:
An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.
Explanation:
hope this helps
A substrate fits into the active site of an enzyme like a lock and key. The substrate has a certain shape that matches or is very similar to the shape of the enzyme so it's the perfect fit, like "a lock and key."
