Tundra biomes occur
A. Only at high latitudes
B. Almost exclusively on Antarctica
C. Where rainfall is too great for tree growth
D. At high latitudes, where temperatures are low
E. At high latitudes and altitudes, where the growing season is short
Answer: E
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A) and methane were unusually low. B) and methane were unusually high. C) were high but methane levels were low. D) were low but methane levels were high.
The United States maintains a focus on terrorism hot spots in the African region. List the countries of this group:
Habitat fragmentation has been an important factor in the decline of ________ species in the United States
A) coral reef B) eastern hemlock C) Kirtland's warbler D) shad and salmon E) manatee
Why do deserts lack thick deposits of soil?
A) Low temperatures and high soil moisture contents accelerate chemical weathering. B) Warm temperatures and high soil moisture contents accelerate chemical weathering. C) Warm temperatures and low soil moisture contents allow some mechanical weathering. D) Temperature has no effect on rock weathering.