Which of the following human activities is thought to be directly linked to why the damage from Hurricane Katrina was so devastating to the city of New Orleans?
a. the overdraft of groundwater from the region
b. the implementation of xeriscaping in the region
c. the degradation or removal of coastal wetlands in the region
d. the conversion of forests into land used for agriculture
e. the channelization of streams nearby
C
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The lethal limit of a "eury" species is likely to be
A) higher than that of a "steno" species. B) lower than that of a "steno" species. C) both higher and lower than that of a "steno" species. D) neither higher nor lower than that of a "steno" species.
Which of the following has dominated food-generating practices in the twentieth century?
A) hunting and gathering B) commercial agriculture C) subsistence agriculture D) pastoralism E) swidden agriculture
Contamination by benzene can be remediated by:
a. GAC b. air stripping c. biodegradation d. all of the above
Which stage in thunderstorm formation is characterized by updrafts accompanied by downdrafts induced by falling precipitation?
A. cumulus stage B. cloud merger stage C. dissipating stage D. mature stage