I'll give brainliest? hurry what type of circulatory system do humans have? a. one loop b. double loop c. triple loop d. quadruple loop

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

the answer is b.) hydrogen bonds between bases.