Describe the activity that most alters each of the following nutrient cycles.
Carbon, Nitrogen, Water, and Phosphorous

the answer is trees if i'm not mistaken

a

explanation:

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.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.