What does taking off one's clothing improve the efficacy of?
Options:
- (A) recovery
- (B) hydration
- (C) Sweating
- (D) Modesty
- (E) Waterproofing
- (F) Exfoliation
- (G) Honesty
- (H) staying warm
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Let's think first: Sweating reduces body heat. Clothing reduces the effectiveness of sweating as a means of cooling the body. Clothing can have an impact on the effectiveness of sweating to cool the body.... So the answer is [(C)]


The first tetrapods were
Options:
- (A) major threat to health
- (B) remains of prehistoric life
- (C) in the frog family
- (D) running and lifting
- (E) competing for resources
- (F) warm-blooded
- (G) objects that have mass
- (H) graptolites
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Let's think first: Amphibians are the first true tetrapods, or vertebrates with four limbs. All frogs are amphibians. Animals in the frog family are the first true tetrapods.... So the answer is [(C)]


What do all vertebrates have that invertebrates don't?
Options:
- (A) sensory neurons
- (B) fur and fat
- (C) bones and joints
- (D) a jaw bone
- (E) kinetic energy
- (F) Chemical energy
- (G) a spinal column
- (H) a set of gills
--
Let's think first: Vertebrates are all chordates that have a backbone. Invertebrates are animals who lack a backbone or spinal column. Vertebrates are all chordates that have a spinal column.... So the answer is [(G)]


What uses sounds, chemicals and visual cues?
Options:
- (A) bees
- (B) seaweed
- (C) running
- (D) monkeys
- (E) humans
- (F) germs
- (G) athletes
- (H) coral
--
Let's think first: Animals can communicate with sounds, chemicals, or visual cues. Monkeys are wild animals. Monkeys communicate with sounds, chemicals or visual cues.... So the answer is [(D)]


Escaping poor weather and food supply changes what?
Options:
- (A) population age
- (B) the environment
- (C) population education
- (D) general preferences
- (E) important habitats
- (F) population size
- (G) movement
- (H) an organism's body
--
Let's think first: Migration is a type of movement that changes population size. Birds migrate to escape poor weather and food supply. Escaping poor weather and food supply changes population size.... So the answer is [(F)]


What can lead to alkalosis?
Options:
- (A) metabolic reaction
- (B) Breathing too fast or too slow
- (C) Drinking too much water.
- (D) Something that causes allergies
- (E) Sleeping too much.
- (F) direct damage to the lungs
- (G) Warm air moving into cold air
- (H) Eating too much.
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Blood pH may become unbalanced if the rate of breathing is too fast or too slow. Alkalosis is a blood pH above 7.45. Rate of breathing being too fast or too slow can lead to alkalosis.... So the answer is [(B)]