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A biological community consists of the different species in an area plus:
ATheir common ancestors
BTheir interactions
CTheir fossil record
DTheir genome sizes
Answer & Solution
Correct answer: B. Their interactions
1. A community is more than a list of the species present.
2. A biological community consists of the different species within an area, typically a three-dimensional space.
3. It also includes the interactions within and among these species.
4. Those interactions are what community ecologists actually study.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 35 'Ecology and the Biosphere', sections 35.1-35.5_
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