An ecosystem is a system that has , , and . A is a group of the same species that lives in the .

Multiple populations of different form a .

An ecosystem is a community of living organisms such as plants,animals,and microorganisms.

A population is a group of the same species that lives in the same habitat.

I hope I’m not saying this wrong,but multiple populations of different species form a big community.

By using internet

C. gemstones they are the only non metallic mineral from the list.