Question

practice it! which of the following statements is a strong hypothesis for this investigation? if the growth rate of cyanobacteria increases, then various fertilizers are continually emptied into the great lakes. if various fertilizers are continually emptied into the great lakes, then the growth rate of cyanobacteria will increase. if the amount of cyanobacteria increases, it will directly affect the amount of fish that survive in the great lakes. if global warming increases, then the amount of bacterial species will increase in the great lakes.

Explanation:

A strong hypothesis should establish a cause - and - effect relationship relevant to the investigation. Here, the most relevant cause - and - effect is between fertilizers being emptied into lakes and the growth rate of cyanobacteria. The first option has the cause - effect in the wrong order. The third option is about cyanobacteria and fish survival, not directly related to the growth rate of cyanobacteria and fertilizers. The fourth option is about global warming and bacterial species in general, not specifically about cyanobacteria and fertilizers.

Answer:

If various fertilizers are continually emptied into the great lakes, then the growth rate of cyanobacteria will increase.