Tree-ring patterns from desert areas are not useful for climate studies because moisture is more determinative for tree growth than temperature
a. True
b. False
ANSWER: True
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Thermal energy is affected by motion that is
A. translational. B. vibrational. C. rotational. D. all of the above
How are resources related to geologic structures?
What will be an ideal response?
Floodplain deposits are primarily ____
A)gravels and sand B)silts, clays, and muds C)formed via bedload transport D)poor in organic materials E)caused when braided streams overflow
In 2005 the United States Congress mandated that NASA find 90 percent of large Near Earth asteroids (NEAs)-those that have the potential to impact Earth-by the year 2020. This mandate was created in response to recent scientific data indicating large impact events were common in Earth's geologic past and therefore will likely occur again in the future. Many new NEAs have been discovered as a result of NASA's efforts and research is under way to find ways to stop such impact events from occurring.The above paragraph suggests that, unlike other natural hazards, asteroid impacts ________.
A. pose little threat to humans B. are intensively studied by scientists C. may some day be prevented D. are not likely to occur in the near future