Which statement BEST describes common communicable diseases? A.
Most communicable diseases are either bacterial or viral and infect the respiratory tract.
B.
All communicable diseases are viruses that cause pneumonia.
C.
Most communicable disease are bacteria and viruses that infect the intestinal tract.
D.
All communicable diseases are bacteria that grow in the respiratory tract.

Larry is taking a walk in the park, the pollen in the air makes him sneeze consistently what line of defense is his immune system exhibiting

0% 10. use the table to answer the question. which elements would you expect to find mainly in the earth’s core? element density (g/cm3) aluminum 2.7 iron 7.87 nickel 8.9 silicon 2.33 iron and silicon aluminum and silicon aluminum and nickel iron and nickel

How does drinking alcohol or using drugs put a person at risk for hiv infection? a.they improve judgment, which makes it more likely for people to engage in risky behavior. b.they impair judgment, which makes it more likely for people to engage in risky behavior. c.they impair judgment, which makes it less likely for people to engage in risky behavior. d.they improve judgment, which makes it less likely for people to engage in risky behavior.