Specialization occurs when competing groups of interbreeding individuals evolve different what?
Options:
- (A) color of leaves
- (B) fur and fat
- (C) forces
- (D) colors
- (E) frontal zones
- (F) graptolites
- (G) sensory neurons
- (H) adaptations
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Let's think first: Specialization occurs when competing species evolve different adaptations. Species is a group of interbreeding individuals. Specialization occurs when competing groups of interbreeding individuals evolve different adaptations.... So the answer is [(H)]

Polyps do not use:
Options:
- (A) visible energy
- (B) an organism's body
- (C) gamete fusion
- (D) Pesticides
- (E) Electrical energy
- (F) heat or cold
- (G) harmful substances
- (H) heat energy
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Let's think first: Polyps usually reproduce asexually. Plants with Asexual Reproduction Plants with asexual reproduction have no gamete fusion. Polyps do not use gamete fusion.... So the answer is [(C)]

Echinoderms are resistant to some:
Options:
- (A) starfish
- (B) enzymes
- (C) Toxicity
- (D) pesticide
- (E) parasites
- (F) toxins
- (G) boats
- (H) chemicals
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Let's think first: Echinoderms lack a centralized nervous system. From animal experiments, it seems to be a central nervous system toxin. Echinoderms are resistant to some toxins.... So the answer is [(F)]

What is a major food source for other organisms, including humans?
Options:
- (A) gastropod shells
- (B) orchids
- (C) invertebrates
- (D) swamp vegetation
- (E) Most plants
- (F) insects
- (G) barnacles
- (H) animals
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Let's think first: Mollusks are a major food source for other organisms, including humans. Mollusks are invertebrates and are no exception. Invertebrates are a major food source for other organisms, including humans.... So the answer is [(C)]

The windiest side of a mountainous peninsula also has the most of what?
Options:
- (A) mountain
- (B) peninsula
- (C) precipitation
- (D) body water
- (E) heat energy
- (F) rainfall
- (G) windward
- (H) kinetic energy
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Let's think first: Precipitation falls on the windward side of the mountain range. For example, the windward side of a peninsula is the windiest side. The windiest side of a mountainous peninsula would have the most precipitation.... So the answer is [(C)]

What causes human disease?
Options:
- (A) HPV
- (B) UV
- (C) minerals
- (D) Tamiflu
- (E) mold
- (F) HIV
- (G) human growth
- (H) CFCs
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Let's think first: Viruses cause many human diseases. Examples include influenza, rabies, HIV, and Herpes viruses. Influenza causes human disease.... So the answer is [(F)]