question: After an infection or injury to the lung, what can happen?
Options:
- (A) Destroy crops
- (B) a lot of human deaths
- (C) Plant growth is reduced
- (D) destroying life
- (E) forest is destroyed
- (F) opportunistic infections
- (G) death and devastation
- (H) negative impact
answer: Pneumonia may be caused by an infection or injury of the lungs. Opportunistic infections, such as Pneumocystis carinii pneumonia, begin to occur. Opportunistic infections may be a result of an infection or injury of the lungs.
The answer is (F)

question: Pacinian corpuscles are found mainly in the _.
Options:
- (A) tumor
- (B) pupils
- (C) muscle
- (D) hair
- (E) skin
- (F) Man
- (G) retina
- (H) Summer
answer: Pressure receptors are found mainly in the skin. Pacinian corpuscles are pressure receptors. Pacinian corpuscles are found mainly in the skin.
The answer is (E)

question: What causes human disease?
Options:
- (A) HPV
- (B) UV
- (C) minerals
- (D) Tamiflu
- (E) mold
- (F) HIV
- (G) human growth
- (H) CFCs
answer: Viruses cause many human diseases. Examples include influenza, rabies, HIV, and Herpes viruses. Influenza causes human disease.
The answer is (F)

question: What differ strongly in appearance and are barrel shaped?
Options:
- (A) bears
- (B) barnacles
- (C) abdomens
- (D) oxen
- (E) Leptospirosis
- (F) cacti
- (G) burrs
- (H) tunicates
answer:
Adult tunicates are barrel-shaped. Tunicates differ strongly in appearance between the adult and larva. Tunicates differ strongly in appearance and are barrel shaped.
The answer is (H)