Question

highlight three (3) constants for this experiment
a pet store owner wants to see what will happen if they feed tanks of goldfish different amounts of food. one tank of goldfish is fed the normal amount which is once a day, a second tank is fed twice a day, and a third tank is fed four times a day during a six - week study. the fishes’ body fat is recorded daily.

Explanation:

To identify constants in the experiment, we look for factors that remain unchanged.

1. Type of fish: All tanks use goldfish, so this is constant.
2. Duration of study: The study lasts six weeks for all tanks, so this is constant.
3. Environment (implied): Factors like tank size, water quality, temperature, etc., are assumed constant to isolate the effect of feeding frequency/amount. (Alternatively, if focusing on given details, the "six - week study" is a given constant, and we can also consider the species of fish (goldfish) and the initial conditions of the tanks (like tank size, water volume) as constants.)

Answer:

1. Type of fish (goldfish)
2. Duration of the study (six - week)
3. Tank environment (e.g., tank size, water quality, temperature, etc., assumed constant)