The curving strips of farmland used in contour strip farming are used to
A) reduce wind erosion.
B) reduce water erosion.
C) irrigate the fields.
D) confuse insect pests.
B
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The Mississippi River Delta system contains a series of ________ coalescing subdeltas
A) 9 B) 7 C) 5 D) 3
Water is naturally purified by
A) evaporation and condensation. B) transpiration and evaporation. C) precipitation and infiltration. D) condensation and transpiration.
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.
One difference between any two different map projections must always be ________
A) scale B) how the geographic grid is arranged C) the number of degrees from the equator to the North Pole D) how accurately shapes are portrayed E) how accurately relative sizes are portrayed