Where is stream gradient usually greatest?
A. headwaters
B. between the headwaters and the mouth
C. mouth
Answer: A
Environmental & Atmospheric Sciences
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Nitrogen's abundance among organic compounds is primarily the result of the wide distribution of which class of compounds?
A) alcohols B) amides C) amines D) imides
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A sinkhole is most likely to form ____
a. after a hurricane? b. ?during a thunderstorm c. ?any time during the rainy season d. ?after an earthquake e. ?at the end of a dry season
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What characterized the Ordovician in terms of invertebrate life, and how does that relate to what was
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Environmental & Atmospheric Sciences