question: What organism uses their sense of smell to find a mate?
Options:
- (A) fur seals
- (B) bears
- (C) Amphibians
- (D) Fish
- (E) mammals
- (F) Butterflies
- (G) rabbit
- (H) Honey smelling bees
answer: Most salamanders use their sense of smell to find a mate. Salamanders are a type of amphibian. Some amphibians use their sense of smell to find a mate.
The answer is (C)

question: Which type of pollution is most harmful to lungs?
Options:
- (A) Lead
- (B) air
- (C) Cars
- (D) oil
- (E) acid
- (F) CFCs
- (G) SO2
- (H) mold
answer: Air pollution harms the respiratory and circulatory systems. Exposure to ozone can diminish lung function and increase susceptibility to respiratory infection. Exposure to air pollution can harm the lungs.
The answer is (B)

question: What would a person do that would reduce their body heat?
Options:
- (A) using steel
- (B) Exfoliation
- (C) Evaporation
- (D) drink a warm drink
- (E) burning coal
- (F) perspire
- (G) exercise outside
- (H) take a nap
answer: Sweating reduces body heat. People of all ages and activity levels perspire or sweat. Perspiration reduces body heat.
The answer is (F)

question: What are critical for erectile health?
Options:
- (A) fur and fat
- (B) Energy.
- (C) Energy
- (D) sweating
- (E) exercise
- (F) arteries
- (G) strength
- (H) a cuticle
answer:
Arteries generally carry oxygen-rich blood. Oxygen-rich blood is critical for erectile health. Arteries are critical for erectile health.
The answer is (F)