I believe it's B. That would be the best guess
Yes,oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart.
The evolution of emotion that’s what Charles Darwin conduct
Answer:
The atmosphere protects earth from the suns strong rays and keeps our oxygen on earth for us to breathe. Not to mention the moon would start taking all our water. If we somehow DID survive, we would not last very long, for the earth would over heat and with no plants, animals, or water, we would either die from starvation or from dehydration. If it weren't for the atmosphere our world would be burned to a crisp like Venus!
Explanation:
