Why didn't ice gather in central and northern Alaska in the last ice age?
A) Proximity to the sea kept it too warm.
B) The climate at that time was tropical.
C) There was too little precipitation.
D) There was too much geothermal heating from volcanic action.
Answer: C
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In the United States, if a person is concerned about an infectious disease such as the avian flu, the most reliable source of information would be the
A) United States Department of Human Health and Sciences. B) United States Department of Agriculture. C) National Academy of Sciences. D) Centers for Disease Control and Prevention.
Discuss what volcanologists look for in trying to determine if a volcano is about to erupt. What will be an ideal response?
Most scientists believe that the Big Bang took place approximately ____ years ago
A)140 billion B)40 billion C)14 billion D)140 million E)40 million
A weather warning indicates that
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