Which of the following regions will primarily erupt silica-rich lavas?

A) Oceanic mantle plumes
B) Oceanic rift zones
C) Continental margins
D) Impact craters


Answer: C

Environmental & Atmospheric Sciences

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It is estimated that 10,000 individual organisms are necessary for an endangered species to continue biological evolution.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

Cloud seeding using silver iodide only works in?

a. ?cold clouds composed entirely of ice crystals. b. ?warm clouds composed entirely of water droplets. c. ?cold clouds with a low ratio of ice crystals to water droplets. d. ?clouds with more ice crystals than supercooled droplets. e. ?clouds that can produce precipitation.

Environmental & Atmospheric Sciences

Which of the following atmospheric layers is the hottest?

A. mesosphere B. troposphere C. thermosphere D. stratosphere

Environmental & Atmospheric Sciences

Which wavelengths are most inefficiently transmitted through the atmosphere?

A) Long B) Visible blue C) Short D) Solar radiation E) Radiation with 0.5-micrometer wavelengths

Environmental & Atmospheric Sciences