Sweat cools the body when it
Options:
- (A) Movement of an air mass
- (B) dry conditions
- (C) heat produced
- (D) Decreased precipitation
- (E) hydration
- (F) It expands
- (G) the environment
- (H) turns into a gas
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Let's think first: Sweat wets the skin, and when it evaporates, it cools the body. Evaporation is when a liquid turns into a gas. Sweat cools the body when it turns into a gas.... So the answer is [(H)]

In what timeframe does menopause typically occur?
Options:
- (A) Earth orbiting the Sun
- (B) an organism's body
- (C) Veins and arteries.
- (D) the rest of the body
- (E) By wind and rain
- (F) 35-65 years old
- (G) major threat to health
- (H) Decrease bodily water
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Let's think first: Menopause occurs when menstruation stops occurring, usually in middle adulthood. Middle adulthood begins around age 35 to 40 and continues through age 65 to 70. Menopause occurs when menstruation stops occurring, usually between 35 and 65 years old.... So the answer is [(F)]

Why do male gametes swim from male to female reproductive organs?
Options:
- (A) temperature changes
- (B) to leave the egg
- (C) fertilization
- (D) competition
- (E) it needs them
- (F) to feed
- (G) permineralization
- (H) to heal themselves
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Let's think first: Sperm had to swim from male to female reproductive organs for fertilization. Male gametes are called sperm. Male gametes had to swim from male to female reproductive organs for fertilization.... So the answer is [(C)]

Producers use energy and inorganic molecules for what?
Options:
- (A) neutralizing threats
- (B) dismissal of nutrients
- (C) heat produced
- (D) Transfers energy
- (E) retention of nutrients
- (F) decomposition
- (G) agriculture
- (H) iron in water
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Let's think first: Producers use energy and inorganic molecules to make food. Food preparation for retention of nutrients is included. Producers use energy and inorganic molecules for the retention of nutrients.... So the answer is [(E)]

Something that helps prevent hypothermia:
Options:
- (A) dehydration
- (B) freezing
- (C) water
- (D) head hair
- (E) cold
- (F) electricity
- (G) Exfoliation
- (H) sweating
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Let's think first: Head hair is especially important in preventing heat loss from the body. Hypothermia Loss of body heat caused by exposure is called Hypothermia. Head hair is especially important in preventing hypothermia.... So the answer is [(D)]

What is something missing in starfish?
Options:
- (A) the body's largest organ
- (B) centralized nervous system
- (C) characteristics
- (D) layers of fat
- (E) permineralization
- (F) biological diversity
- (G) kinetic energy
- (H) A compound that donates proton
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Let's think first: Echinoderms lack a centralized nervous system. Echinoderms are represented by the starfish. Starfish lack a centralized nervous system.... So the answer is [(B)]