After reading the section "Investigating Life: The Orchid and the Moth," you test Charles Darwin's prediction that an orchid with long pollen tubes has a pollinator with long,thin mouthparts that could reach the bottom of the elongated nectar tube.You place nets over some orchids that allow pollinators with small,short mouthparts to enter,but prevents pollinators with long,thin mouthparts.Then,you compare the number of seeds produced by plants with and without the nets.The seed production is
A) a dependent variable.
B) a hypothesis.
C) a theory.
D) an independent variable.
E) a standardized variablE.
Correct Answer:
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