The current number of internally displaced persons within sub-Saharan Africa is approximately
A) 2 million
B) 11 million
C) 5 million
D) 75 million
E) 1 million
B) 11 million
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Evaporite deposits are examples of
A. metamorphic mineral deposits. B. sedimentary mineral deposits. C. igneous mineral deposits. D. None of the choices are correct.
Updrafts responsible for the formation of thunderstorm clouds are most likely to occur with which combination of conditions?
A. Low-level cool, dry air; upper-level cool dry air
B. Low-level cool, dry air; upper-level warm moist air
C. Low-level warm moist air; upper-level cool, dry air
D. Low-level warm, moist air; upper-level warm, moist air
The moist adiabatic rate is different from the dry adiabatic rate because:
A) latent heat is released inside a parcel of rising saturated air. B) a parcel of saturated air weighs less than a parcel of unsaturated air. C) saturated air is always unstable. D) an unstable air parcel expands more rapidly. E) unsaturated air is always stable.
Which of the following radioisotopes, which is an a emitter used in the treatment of prostate cancer, is implanted in the prostate as seeds?
A) Ac-225 B) Co-60 C) I-125 D) P-32