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?

Can you please put the graph in the question so I can see it?

Acids have a pH level power than 7. Water is usually close to 7 pH, but it is usually diluted because of various factors. I'm assuming you mean the pH of the sample was 5.4? This would make more sense. The acid rain would lower the average pH because the rain has a pH less than 7. The rain's pH will also be less than 5.4 because it would need to average with the waters previous pH to get this number. 

A) early horses is your answer

Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .