The process that happens when pesticide residues evaporate from soil and water in warm areas, and then condense in and precipitate in colder regions is called
A. Pesticide rain
B. The grasshopper effect
C. Pesticide persistence and mobility
D. Bioaccumulation
E. The pesticide treadmill
Answer: B
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Water vapor is a greenhouse gas that is present at higher concentrations in the atmosphere than CO2. Why then is CO2 considered to be the primary greenhouse gas?
A. Water vapor has a much longer residence time in the atmosphere than CO2. B. Warming is amplified by additions of CO2that decrease the amount of water vapor that the atmosphere can hold. C. Warming is amplified by additions of CO2that increase the amount of water vapor that the atmosphere can hold. D. Lower levels of water vapor drive increases in CO2 concentrations. E. Water vapor concentrations are decreasing while CO2 concentrations are increasing.
Which group of fossils is considered evidence for the former existence of Gondwana?
a. Glossaurus b. Pecopteris c. Neuropteris d. Glossopteris e. Messopteris
Sediment may build up off a point of land to form a ________.
A. groin B. fiord C. spit D. stack E. cliffed headland
A major concern about possible future eruptions of Mount Rainier is the potential for mudflow damage to nearby cities.
Answer the following statement true (T) or false (F)