What would your experimental approach be to test this hypothesis?
Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
Possible Hypotheses:
1. The amount of dissolved oxygen affects the number of fish that can live in a body of water.
2. As dissolved oxygen concentration increases, more fish can live in the body of water.
3. There is an ideal dissolved oxygen concentration for fish to live in.
3. What would your experimental approach be to test this hypothesis?
Possible Experimental Approach: Deposit an equal number of fish in several tanks. Maintain all other variables (temperature, light, food, etc.), but vary the dissolved oxygen concentration in each of the tanks. Observe the fish over time to determine how many fish can survive at different oxygen concentrations.
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