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MCAT Question A Day - 10/5/14

Although human behavior ensures the success of each new generation of corn, selective breeding by humans has genetically altered corn so that it could not survive ithe wild without human intervention. Corn population is controlled, and most of the corn seeds are eaten or become spoiled. The relationship between humans and corn is best described as:

A.  commensalism because humans benefit and com is neither benefited nor harmed.
B.  commensalism because there is no true benefit to either species.
C.  parasitism because humans benefit and corn is harmed.
D.  mutualism because both species benefit.

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