victorgonzalez39 victorgonzalez39

23-05-2019
Biology

contestada

which of the following is a biotic factor that could reduce a population of frogs

A: water pollution from chemical fertillizers

B: drought that dries up ponds and puddles

C: an increase in aquatic bird population

D: a decrease in parasitic flukes

Respuesta :

23-05-2019

C.

Biotic mean alive, so we can cut off the first 2 easily. Aquatic birds eat frogs, so that one is safe for now. A decrease in something parasitic usually helps the population, so D is out too. The only one left is C.

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