Which of the following signs may indicate heat exhaustion?
a. hunger, fatigue, and back pain
b. muscle cramps, fatigue, and lightheadedness
c. lethargy, thirst, nausea, dry skin
d. overexcitability, inability to sleep

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.

answer leukemia,lymphoma,aplastic anemia;