Answer:
In 1900, the top three causes of death in the United States were pneumonia/influenza, tuberculosis, and diarrhea/enteritis. Communicable diseases accounted for about 60 percent of all deaths. In 1900, heart disease and cancer were ranked number four and eight respectively.
Explanation:
This is a false statement. There is a big difference between feeling the burn and feeling pain, if you are feeling pain it could mean that you have pulled a muscle and you should stop and consult your doctor, also if you are feeling back pain that means you maybe pinched a nerve or slipped the disc. Lastly, other signs pain you should look for is ankle pain and feeling lightheaded because ankle pain could indicate a sprain and lightheaded can indicate that you are either overworked yourself or you are not getting enough water consumption.
I think that it is Lung cancer that is mainly caused by tobacco
The answer to you question is the second options.
B) Agility
The umbilical cords carries nutrients that are entered into mothers bloodstream to the fetus.