Answer: Capillaries connect the arterial system — which includes the blood vessels that carry blood away from your heart — to your venous system. Your venous system includes the blood vessels that carry blood back to your heart. The exchange of oxygen, nutrients, and waste between your blood and tissues also happens in your capillaries.
Answer:
I would say B
Explanation:
I know for sure it's not C
Answer:
The fossils found in deeper layers of rock are older.
Explanation:
This is because as the years go by more rock accumulates covering old fossils and creating space for new ones. The older fossils are then found in deeper layers of rock because of the newer layer that cover it.