Question

a researcher wanted to determine the effect water temperature has on goldfish respirations. the researcher placed the goldfish in three different bowls of water with three different temperatures and counted the goldfishs respirations for two minutes in each setting. what is the dependent variable in this scenario?
o number of respirations
o length of time
o water temperature
o the goldfish

Explanation:

A dependent variable is what is being measured and affected during an experiment. Here, the researcher is measuring how the number of goldfish respirations changes with water temperature. The length of time is a fixed - factor (2 minutes), water temperature is the independent variable being manipulated, and the goldfish is the subject of the experiment. So, the number of respirations is the dependent variable.

Answer:

number of respirations