What happens to ice movement within a glacier when the glacier is retreating?
A)The ice flows uphill.
B)The ice flows downhill.
C)The ice flow spreads out laterally.
D)The ice no longer flows.
E)The ice flows downhill in the zone of accumulation and uphill in the zone of wastage.
B
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Which of the following describes why a fluffy covering of snow is able to protect sensitive plants and their root systems from damaging low temperatures?
A. Snow is a good insulator. B. Melting snow releases latent heat. C. Snow is a good emitter of infrared energy. D. Snow is a good reflector of sunlight.
Driving through eastern Washington you notice many areas of exposed rock, deep river canyons, and huge boulders scattered across the landscape. Then you remember these are all impacts left on the landscape of what?
A) Volcanic activity B) Block faulting C) Glacial scouring D) The Missoula Flood
Carbon monoxide is principally a local air-pollution problem of areas with heavy traffic, not a global air-pollution problem.
Answer the following statement true (T) or false (F)
Which of the following is non-point-source pollution?
a) methyl mercury from an industrial plant b) oil spill form a cargo ship c) rain runoff carrying trash into the bay d) DDT runoff from a farm e) all of the above