A:
A community of organisms interacting with one another.
B:
That part of the Earth which is inhabited by living organisms.
C:
A community of organisms together with the environment in which they live
D:
The flora and fauna of a geographical area
Explanation
The correct answer is A community of organisms together with the environment in which they live.
Ecosystem :
It is an interaction of all living and nonliving organisms with the surrounding environment.
The different types of the ecosystem include:
•Terrestrial ecosystem
•Forest ecosystem
•Grassland ecosystem
•Desert ecosystem
•Tundra ecosystem
•Freshwater ecosystem
•Marine ecosystem