Biology

Kaden Mosley

16 May, 13:08

A scientist wants to investigate the effect of water temperature on fish respiration. He takes one goldfish and places it in 100 ml of warm water, puts another goldfish in 100 ml of cold water and puts another one in 100 ml of room temperature water. He collects data by counting the respiration of each fish for 1 minute What are the constant variables (Fixed Variables) ?

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