A person's ability to shiver is lost when his or her body temperature falls below:
A. 90°F (32°C).
B. 92°F (33°C).
C. 94°F (34°C).
D. 95°F (35°C).
Answer: A. 90°F (32°C).
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Species that live a long life and have only a few offspring, such as humans, can be characterized as
A) K-selected. B) r-selected. C) autotrophs. D) omnivores.
In the dissipating stage of an ordinary single-cell thunderstorm
A) entrainment is no longer occurring. B) severe lightning is most likely to occur. C) precipitation reaches a maximum. D) downdraft is stronger than updraft. E) all of the above
Which of the following is not an example of individuals and communities working to mitigate climate change?
A) Tree planting in exchange for greenhouse gas credits B) Leaving the decision-making to elected officials C) Farmers using no-till agriculture D) Protecting and restoring natural habitats E) Using renewable energy sources
What did the phenomenon of polar wandering help explain?
A. Global mass extinctions B. Movement of the continents C. Movement of polar glaciers D. Development of the Ice Age