How will melting permafrost in polar regions lead to a positive feedback loop that will continue to warm the climate, which will allow for more permafrost to melt?
A) Buried CFCs will be released from contaminants in frozen vegetation
B) Methane will be released as the vegetation thaws
C) Nitrous oxide will be trapped in the meltwater generated and pulled out of the atmosphere
D) Carbon dioxide is sequestered in the water infiltrating the landscape
Answer: B
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What will be an ideal response?
What is the longest river in Southeast Asia?
A) Irrawaddy B) Chao Phraya C) Red River D) Mekong E) Salween
A surge is a(n) ____
a. ?upthrust in a lava dome b. ?increase in pressure on a magma chamber c. ?emission of poisonous gas d. ?wave of steam associated with pyroclastic flows e. ?increase in volcanic activity in a geographic area
Most bathymetry measurements were made by sensors carried on ships.
Answer the following statement true (T) or false (F)