Endangered Species Vocab Brain Teaser

I am a large region of earth with a specific climate and specific living things, what am I?
I am made up of all of the living and nonliving things in an area, what am I?
I am a species that is very likely to become extinct in the near future worldwide, what am I?
Endangered Species
I am a species that is vulnerable to endangerment in the near future, what am I?
Threatened Species
I am a species whose population has declined to the point where it can no longer play a significant role in the ecosystem, what am I?
Functionally extinct
End Of Game