Answer:
A
Explanation:
Commensalism is when two organisms associate and one benefits and the other doesn't - and isn't harmed. :)
Commensalism is a type of relationship is made to take benefit but do not harm the other. The correct option is A.
A biological interaction in ecology is the effect that two organisms living in the same community have on one another.
These interactions can be:
Thus, the correct option is A.
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