An increase in stream velocity can be caused by:
a. an increase in stream gradient.
b. an increase in channel roughness.
c. a decrease in stream competence.
d. a decrease in stream capacity.
e. a decrease in stream energy.
A
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Judge the following sentence according to the criteria given below: The majority of lithogenous deposits are composed primarily of quartz BECAUSE quartz is resistant to abrasion and can be transported long distances and deposited far from its source
area. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct. but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Which of the following statements describes a polar molecule?
A. The molecules are usually not attracted to one another very strongly. B. The molecules have a high degree of symmetry. C. Polar molecules have the weakest intermolecular interactions with ionic compounds. D. The electrons in the molecule are distributed evenly throughout the molecule. E. None of these statements describe polar molecules.
The scale of an atmospheric feature depends on its
A) areal coverage only B) time span only C) both areal coverage and time span
Most of the world's population growth in the near future will be in
A) Europe. B) North America. C) developing countries. D) developed countries.