Which is NOT a consequence of permafrost thawing?

a. deformation of roads and railroads
b. decay of organic material
c. trees tilting at various angles
d. absorption of methane gas
e. sinkholes


ANSWER: d

Environmental & Atmospheric Sciences

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Off-road vehicles should only use existing roads to minimize their environmental impact.

Answer the following statement true (T) or false (F)

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Which region experiences the highest rates of infant mortality?

A) Africa B) Asia C) Europe D) South America E) North America

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The red dots that coincide with volcanically active island chains shown on the map are called

A. island arcs. B. mid-ocean ridges. C. abyssal plains. D. hot spots.

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