Answer:
6. Because of how old the rocks are
Explanation:
6. Sedimentary rock forms in layers because of the order they were formed. The older rocks will form first and as time goes on, rock forms above it to create a new layer, and so on.
Valves ensure blood flows toward your heart. Vein valves work to bring the blood that flowed down via arteries back up to your heart.
This works because the white pain acts as a barrier, therefor the sunlight a bounces off the glass instead of just going through.
Rodent like teeth, leg structure, better eyes
Answer:
Genetics comes with birth and is from previous ancestors. It's genetic code, also known as DNA. You are born with your genetics inherited from your parents.
