It would be, (B) It enables scientists to better differentiate among the various species.
B- Anemia reduces the amount of oxygen reaching body cells and can be passed on through DNA.
Most organisms can tolerate a very narrow pH range close to neutral, i.e., around pH 7. It is likely that there would not be much life in the lake at pH 3. Once the pH increases to above 5.5 to 6, it is more likely that life would begin to survive. Once the pH rises to above around 9, the solution is starting to become basic, and once again, few organisms will survive.
