Answer:
This approach is now under scrutiny because of our understanding of
human microbiomes.
Answer:
I go with c because we have to keep trying no matter what, we cant go in a dark blank space with nothing. Imagine this, your depressed and your grades are down, you look at your friends all the way on top and your on the bottom. How can you fix this? Try.
Explanation:
There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process. Arteries carry oxygenated blood away from the heart. They're tough on the outside but they contain a smooth interior layer of epithelial cells that allows blood to flow easily.