Match the causes of soil erosion with the soil conservation practice intended to reduce that erosion.Wind velocity:
A. Keep soil covered
B. Contour plowing
C. Provide shelter for fields
D. Return organic matter to soil
Answer: C
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Which of the following features is associated with a subduction zone?
a) mid-ocean ridge b) linear island chain c) rain forests d) deep trenches
Water evaporated from the ocean surface is moved by ____
a. cold fronts b. wind c. precipitation d. climate e. condensation
The three stable (i.e., nonvariable) gases in the atmosphere, in order of abundance from most to least, are
A) carbon dioxide, argon, oxygen. B) oxygen, carbon dioxide, argon. C) nitrogen, oxygen, argon. D) oxygen, argon, nitrogen.
A breeder reactor
A. would be pollution-free, but the technology does not yet exist. B. converts more-common isotopes, such as uranium-238, to fissionable fuel during normal operation. C. reprocesses spent fuel rods to extract plutonium. D. All of the choices are correct.