Dolphins use echolocation to maneuver around objects quickly and precisely to capture prey. Thus, you would expect them to have a larger-than-normal
A) limbic system.
B) cerebrum.
C) hypothalamus.
D) cerebellum.
E) amygdala.
D
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Imagine two species of birds with similar beak sizes and diets. Where the two species are allopatric, we would expect that their beak sizes
A. should be more different than when sympatric. B. should be more similar than when sympatric. C. should be larger than when sympatric. D. should be smaller than when sympatric. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about character displacement? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The elongation of stems is stimulated by
A. auxin only. B. gibberellin only. C. ethylene only. D. auxin and gibberellin. E. auxin and ethylene.
There are not many species of fish living deep in the oceans, but the deep-sea fish occasionally pulled up by fisherman have been bizarre creatures, such as the deep-sea anglerfish with its giant fangs and bioluminescent lure. Why have these fascinating deep-sea fish never been shown live on exhibit in an aquarium?
A. Their diet is too specialized. B. They are adapted to cold temperatures and total darkness. C. They might frighten visitors. D. They are adapted for high pressure, and will die at low pressure. Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about the deep sea environment? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Modern Homo sapiens arose in
A. Africa. B. North America. C. Europe, the Neander Valley. D. Asia.