8. Which of these will have a CO2 level that is a result of compensation, instead of being a cause of the pH problem in the first place? A. drinking vinegar
B. has pneumonia
C. heart attack
D. running a mile

it's a common sense question think with coll head now there is the options for you - a) it's a wrong question b)in his dream c) he is dead d)sleeping during the night time

explanation:

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.