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A) A biome
B) A community
C) An ecosystem
D) A niche
When populations share the environment and interact with the other populations of different living species present in the same are, it is called an ecological community. Thus, the correct option is B.
An ecological community is defined as the group of species which are commonly found together in an area. Ecological communities may include animal or plant assemblages with the similar habitat requirements and contain species which may interact with each other or rely on the similar processes in their particular environment.
An example of ecological community is a forest community which comprises of all the trees, the plant community, birds, deer, squirrels, foxes, fungi, insects, and other local or seasonal species.
Therefore, the correct option is B.
Learn more about Ecological community here:
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Answer:
A
Explanation:
its an ecosystem; reaction between living things and their environment
B) Two atria and one ventricle
C) One atrium and two ventricles
D) Two atria and two ventricles