Fact 1: Vertebrates are animals that have a backbone. Fact 2: Human beings are vertebrates. Given the two facts above, what has a backbone?
OPTIONS:
- Humans
- sharks
- Jellyfish
- Snails
- ferns
- Hornets
- people
- insects
Humans
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Fact 1: Contact between rocks over long periods of time causes rocks to smooth. Fact 2: Rocks on the streambed are subrounded and fairly smooth. Given the two facts above, contact between rocks over long periods of time causes rocks to be what?
OPTIONS:
- coiled
- homogenous
- inactive
- subrounded
- dormant state
- barrel-shaped
- erosion
- threatened
subrounded
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Fact 1: Cutting down trees has a negative impact on an ecosystem. Fact 2: All oaks are trees. Given the two facts above, what has a negative impact on an ecosystem?
OPTIONS:
- planting trees
- cutting down oaks
- Destroy bridges
- planting oaks
- adding habitat
- deforestation
- massive damage
- Pesticides
cutting down oaks
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Fact 1: Smoking tobacco decreases stamina. Fact 2: Tobacco includes cigarettes, cigars, chewing tobacco, and more. Given the two facts above, what decreases stamina?
OPTIONS:
- Plant growth is reduced
- harmful substances
- dehydration
- influenza
- liver cancer
- Abnormal cell growth
- smoking cigarettes
- some viruses
smoking cigarettes
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