Brain drain is
A) the large-scale emigration of talented people.
B) the process by which people are given reference for migration.
C) people forced to migrate for political reasons.
D) a cultural feature that hinders migration.
E) a net decline in literacy.
Answer: A
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____________________ are excavated depressions such as ponds, pits, or lagoons into which liquid hazardous wastes are stored.
Fill in the blank(s) with the appropriate word(s).
What is a use of understanding magnetic reversals?
A) Matching the patterns of reversals in a rock sequence to the magnetic timescale B) Studying magnetic stripes on the seafloor C) Calculating rates of seafloor spreading D) All of these are correct.
Raindrops fall because:
A) they are large compared to atmospheric molecules. B) they are small compared to atmospheric molecules. C) they become large enough that gravity can pull them out of the sky. D) they roll down isentropic surfaces and can't be stopped.
Upper level divergence coupled with lower level convergence
A) are the ingredients needed for strong storm systems. B) cause strong upward vertical motions. C) have a destabilizing effect on the atmosphere. D) all of these