How is it possible for a landslide to occur without a trigger?
A) Heating from geothermal processes weakens the rock.
B) Long-term weathering weakens the rock past the strength necessary to maintain stability.
C) Slopes are shaken by earthquakes and the materials are loosened.
D) Water migrates along the sediment particles, reducing friction between them.
Answer: B
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The water conditions that produce an oligotrophic aquatic community most likely has
A) high levels of nutrients and high levels of oxygen. B) low levels of nutrients and low levels of oxygen. C) high levels of nutrients and low levels of oxygen. D) low levels of nutrients and high levels of oxygen.
Which one of the following is true of hydrogen fuel cell technology?
A) Many homes were built in desert regions using the technology to collect and heat water. B) It has been used widely in NASA's spaceflight programs. C) The visionaries of the fossil fuel companies saw the need to develop this technology. D) The U.S. government wanted it for use in military operations. E) It was originally slated for use in cars by Ford.
Earth's atmosphere is divided into named layers based on the vertical profile of
a. ?air pressure. b. ?air temperature. c. ?air density. d. ?wind speed. e. ?chemical composition.
The temperature at which condensation takes place is the _______________ temperature
Fill in the blank(s) with correct word