A one-way relationship in which one species benefits at the expense of another is
a. commensalism.
b. symbiosis.
c. parasitism.
d. mutualism.
The weakest symbiotic attachment, in which one species simply lives better in the presence of another species that is relatively unaffected, is called
a. commensalism.
b. competitive exclusion.
c. mutualism.
d. predation.
In the food chain, grass?rabbit?eagle, the reaction between the grass and eagle is
a. predation.
b. commensalism.
c. competition.
d. neutral.
The interaction in which one species benefits and the second species is neither harmed nor benefited is
a. mutualism.
b. parasitism.
c. commensalism.
d. competition.
The interaction between two species in which both species are harmed is known as
a. mutualism.
b. parasitism.
c. commensalism.
d. competition.
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