Answer:
I believe the answer is Carbon Dioxide.
Explanation:
Answer:
a. they can never run out as they come back quickly
Answer:
b
Explanation:
because global warming is caused by an increase in earths temperature
The answer would most likely be D. During their development, many organisms look similar, suggesting that very different organisms may have a common ancestor.
This is because this be evidence to the theory of common decent
Answer:
pumps oxygen-ruch blood to the body
