You have a friend who is really good at math. You are really good at english. Your friend helps you complete your math, and you help your friend complete your english homework. This is an example of

You have a friend who is really good at math. You are really good at english. Your friend helps you complete your math, and you help your friend complete your english homework. This is an example of 



a. predation
b. commensalism
c. mutualism
d. parasitism


Answer: c. mutualism


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