Answer:
First, it transports blood with oxygen and nutrients to cells all over the body. Second, it picks up waste products from the cells to be transported out of the body, and it takes the deoxygenated blood back to the lungs so it can regenerate.
Viruses go around in the air and bacteria you have to touch
Both are made only of oxygen atoms.
They are both gases kept at room temperature.
Both absorb UV-C and more energetic radiation of the Sun.
Answer:
to ensure that the two individuals are of the same species
Explanation:
It also involves stereotyped behaviours. Courtship behaviour informs a potential mate that the intention is breeding and not aggression.
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