In the 1800s, many people living in the cities in the united states died of infectious diseases such as cholera, which is caused by a bacterium that pollutes water. cholera is no longer a major problem in the united states. what is the most likely reason for the elimination of cholera as a major disease? a. advances in medicine have led to cures for cholera. b. people have learned the importance of washing their hands. c. sewage treatment plants have eliminated such pathogens from drinking water. d. regulations have prevented factories from dumping pollution into lakes and rivers.

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.