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Afina-wow [57]
3 years ago
7

Answer answer answer answer

Biology
2 answers:
muminat3 years ago
8 0

The correct answer should be :

A. Frog population.

Since the other options aren't really related to the investigation.

Hope this helps,

Davinia.

Alla [95]3 years ago
7 0

The independant variable would be the trout population because the dependant is the frog population as the trout prey on the frog

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