Which of the following terms refers to the situation when an mT air mass lies above a cold ground surface?
A. occluded
B. unstable
C. stationary
D. stable
Answer: D
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Which commercial energy source provides the most energy for the world?
What will be an ideal response?
An airplane flown by an untrained pilot is likely to crash if it flies through a downburst
Indicate whether the statement is true or false
These are areas not connected with plate boundaries but are regions of volcanic activities and are used to monitor the direction and movement of plates:
A. Hotspots. B. Volcanic areas. C. Convergent plate boundaries. D. Divergent plate boundaries.
Which is not a reason that fresh water wells near coastlines abruptly become salty and unusable?
A) As water is pumped from the well, the freshwater runs out and leaves only the salty water from the sea. B) Salt water is denser than fresh water, so it lays on the lower part of coastal aquifers. C) Sea water infiltrates underlying pore spaces, making ground water beneath the sea floor salty. D) As water is pumped from the well, the saltwater part of the aquifer flows up because of decreased aquifer pressure.