What is permafrost?
A) Curly crystals of frost that form early in the morning
B) Ice and snow that exist throughout the entire year
C) Ice and snow that are permanently in motion
D) The upper part of the ground that remains frozen throughout the year
D) The upper part of the ground that remains frozen throughout the year
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7°C is equal to ________°F
A) -13.9 B) 280 C) 65 D) 44.6
A ________ is a layer of sedimentary rock with a vertical change in particle size, usually from coarse at the bottom to fine at the top.
A. graded bed B. sorted bed C. schist D. cross bed E. patterned bed
The Aral Sea provides a good illustration of international cooperation in water-resource management, with the additional benefit of enhancing commercial fishing opportunities.
Answer the following statement true (T) or false (F)
These low level clouds are composed of water droplets and indicate slightly unstable conditions
A. cirrocumulus. B. cumulus. C. altocumulus. D. cumulonimbus.