Answer:
I think C. Sand.
Explanation:
I think it is sand because water would seep into smaller particles.
Answer:
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
Explanation:
Answer:
attempts to integrate an understanding of evolution and extinction with ecology and environmental systems
Explanation:
The field of Conservation biology is based on the management of nature and of Earth's biodiversity to reduce the level of extinction and the erosion of biotic interactions
So as to protect species, it a habitats and ecosystems
The have thick bark and roots that regenerate quickly!
