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Which one of the following is most appro...

Which one of the following is most appropriately defined ?

A

Commensalism is a relationship in which one species is benefitted and the other is neither benefitted nor harmed.

B

Parasite is an organism which always lives inside the body of other organism and may kill it.

C

Competition is defined as a process in which the fitness of one species is significantly higher in the presence of another species.

D

Mutualism is a relationship in which one species is benefitted where as the other is unaffected.

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The correct Answer is:
A
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