Studies have shown that the sea level:
A) should drop over the next 100 years.
B) has risen about 25 centimeters since 1870.
C) should not change significantly over the next 100 years.
D) has not changed measurably over the last century.
B
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Which was found to be the most economical approach to protect drinking water sources for New York City?
A. Pay landowners to protect watersheds. B. Build a water purification plant. C. Pump oxygen into lakes. D. Spraying herbicides in lakes.
Air is saturated when the dew-point temperature and the air temperature coincide
Indicate whether the statement is true or false
Which of the following is probably not important in assessing an area's potential for slope failure?
A) Comparing the geologic setting to adjacent areas that have or have not failed B) Whether the material is loose sediment or solid bedrock C) Recent changes in slope D) The orientation of layering and fractures E) All of these are important.
A cratonic sequence is recognized by a:
a. transgressive phase followed by regressive phase. b. regressive phase followed by a transgressive phase. c. regressive phase only. d. transgressive phase only. e. lack of any sequence.