Interglacial periods are:
a. very slow-moving periods
b. extended periods when glaciers covered the earth.
c. warm periods between glacial advances.
d. None of these choices.
c
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Which of the following statements are FALSE about shifting cultivation
A) People clear a patch of land and burn the rubble. B) The soils on these patches are depleted rather quickly. C) The soils usually become permanently infertile. D) After the soil in one patch is depleted, the farmers move on to clear another. E) None of the above is false about shifting cultivation.
When air is heated it expands and ________
A) explodes B) contracts C) sinks D) lowers its pressure E) burns
Contamination by benzene can be remediated by:
a. GAC b. air stripping c. biodegradation d. all of the above
Judge the following sentence according to the criteria given below: Biogenous sediment usually contains abundant calcite below the calcite compensation depth BECAUSE it readily dissolves above the calcite compensation depth
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.