Help pls and thank you :]
A student was interested in factors that might affect fish populations in a lake ecosystem. He thought the pollution in the water might be a factor.

Q: Which would be the best hypothesis for this research question?

1. If the pollution level of the lake increases, then the fish population will decrease.

2. If the fish population increases, then the pollution level will decrease.

3. If the size of the lake increases, then the fish population will increase.

4.If the pollution level in the lake decreases, then the size of the lake will decrease.

Question

Help pls and thank you :] 
 A student was interested in factors that might affect fish populations in a lake ecosystem.  He thought the pollution in the water might be a factor.

Q: Which would be the best hypothesis for this research question?

1. If the pollution level of the lake increases, then the fish population will decrease.
	
2. If the fish population increases, then the pollution level will decrease.
	
3. If the size of the lake increases, then the fish population will increase.
	
4.If the pollution level in the lake decreases, then the size of the lake will decrease.

Vocaloid · Answer

Notice how the two variables he wants to study: a. The fish population and b. Pollution

Only options 1 and 2 examine a relationship between these two variables

Between options 1 and 2, which one do you think would be better supported by evidence?