The presence of talus slopes indicates the occurrence of
A) mudflow.
B) rockfall.
C) creep.
D) slump.
E) planar slides.
Question 2
The amount CO2 that entered the atmosphere during the Paleocene-Eocene Thermal Maximum (PETM) is estimated to be the equivalent of
A) the amount released to the atmosphere by the 1991 Mount Pinatubo eruption.
B) the amount human activity would release to the atmosphere with the burning of all Earth's fossil-fuel reserves.
C) burning all of Earth's fossil fuel supply repeatedly 100 times over a 50 year period.
D) the amount released to the atmosphere due to agricultural practices and rapid human population growth in China since 1980.
E) the amount released to the atmosphere since the beginning of the industrial revolution.
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