The British Isles experience warmer weather than other areas of the same latitude because of
A. the vast forests that shelter the islands from winds.
B. mountain ranges protecting the islands.
C. industry causing a localized greenhouse effect.
D. the warm, moist Gulf Stream.
Answer: D
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A key concept in evolution is that all mutations are
A) random. B) neutral. C) deleterious. D) either deleterious or beneficial.
Humans have selectively bred many radically different domestic animals (e.g., St. Bernard and Chihuahua dog breeds). Does this activity result in evolution? Why or why not?
What will be an ideal response?
Homeostasis is the
A. dynamic interplay between events that tend to change the external environment and events that tend to keep it the same. B. the acquisition, transformation and use of energy. C. negative feedback loop that stimulates a response similar to the stimulus. D. maintenance of normal internal conditions by means of self-regulating mechanisms.
What is the longest phase of the cell cycle?
a. mitosis b. cytokinesis c. interphase d. metaphase