A. both organisms involved benefit
B. none of the organisms benefits or harm each other
C. both organisms harm each other
D. only one of the organisms is harmed
Correct Answer:
Option A – both organisms involved benefit
A. both organisms involved benefit
B. none of the organisms benefits or harm each other
C. both organisms harm each other
D. only one of the organisms is harmed
Correct Answer:
Option A – both organisms involved benefit
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