Which of these characteristics is often used as a measure of an ecosystems health? A. The variety of species that lives there B. The number of people who live there C. The amount of population that occurs there D. The types of activities that can be done there

A

Explanation:

Because the more species that live their can determine how well the environment is doing.And that their is enough resources for them to survive.

human-caused climate hope this

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .