To test acidity levels of water, scientists test its ph. as acid rain falls, the ph levels in lakes and streams decreases. candice is working on a project to determine whether acid rain is lowering the numbers of bass and mayflies in a lake. the ph of a water sample to be 54. she concludes that the lake's ph level is causing a decrease in the numbers of bass mayflies present there. how would you respond to candice's conclusion, based on the data in the graph?

This bar chart represents at the pH levels at which certain animals cannot live. The lower pH levels begin to negatively affect some animals. Bass and mayflies cannot live in a condition with a pH level below 5.5. Therefore, a pH level of 5.4 is extremely dangerous for both bass and mayflies. Candice can draw the conclusion, based on the chart, that The lake's pH level of 5.4 will cause a decrease in the amount of bass and mayflies. in her hometown.

the correct answer is:

a population changes in response to a change in the environment.