An increase in the number of polar bears seen visiting human settlements indicates that
a. Polar bear populations are not actually declining.
b. More limited hunting is driving the bears to seek food in human settlements more frequently.
c. Polar bear populations are on the increase.
d. Human food is more appealing to polar bears than wild seals.
e. Polar bear populations are on the increase and human food is more appealing to polar bears than wild seals.
B
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If less-developed countries can make money while more-developed countries can rid themselves of waste, why would opponents be against exporting wastes to developing countries?
A. The waste that is being exported contains unwanted materials or it would not be exported B. The practice can involve corrupt government officials who allow the wastes to be dumped illegally C. People in the developing country may not have the resources to test for toxic materials in the waste D. Local people in the developing country probably do not know what is in the waste E. All of these are reasons why opponents are against exporting wastes to developing countries
Compaction of soil in a garden harms plants by ________
A) increasing aeration, increasing infiltration, and decreasing runoff B) decreasing aeration, increasing infiltration, and decreasing runoff C) decreasing aeration, decreasing infiltration, and increasing runoff D) increasing aeration, decreasing infiltration, and increasing runoff
In the Northern Hemisphere, south-facing mountain slopes normally have a smaller diurnal range in temperature than north-facing slopes
a. True b. False
The Earth's largest sinkholes are in ________ regions
A) high altitude B) polar C) tropical D) middle latitude E) ocean