A hummingbird that pollinates morning glory

flowers and nests in the crotch of an apple tree.
The apple tree is not harmed or helped by the
hummingbird. The relationship between the
hummingbird and the apple tree is a



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


B

Biology & Microbiology

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What is a global impact of glacier recession?

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Which of the following ions plays the most prominent known role in the opening and closing of

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What scientist(s) first demonstrated in the laboratory that organic compounds could be synthesized in an abiotic environment?

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