Answer:
All the organisms of one kind in an ecosystem are called a population. For example, a pond ecosystem might have populations of frogs, waterlilies, insects, duckweed, and protists. Populations living and interacting with each other form a community.
Explanation:
I think it D.100% because the air has reached its limit
I think that the answer is 1 and III
2 kingdoms
Plantae
And animalia
Hope that helped :D
