A parcel of air, with less than 100% relative humidity, that is rising because of heat energy derived from the surface is
A) stable.
B) unstable.
C) conditionally unstable.
B
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Ethiopia and Eritrea adopted which form of Christianity?
A) Protestantism B) Evangelical Christianity C) Roman Catholicism D) Orthodox Christianity E) Coptic Christianity
Two billiard balls having the same mass roll toward each other, each moving at the same speed. What is the combined momentum of the two balls?
A) 0 kg ? m/s B) 10 kg ? m/s C) more information needed to determine
Most of the energy captured by photosynthesis is stored in chemical bonds in
A) glucose. B) oxygen. C) carbon dioxide. D) water.
On a given stream, small floods happen ________.
A. more often than large floods B. sometimes more often, sometimes less often than large floods, depending on long-term climate C. less often than large floods, which explains why we hear about large floods more often in the news D. with the same frequency as large floods