Stresses cause rocks to deform; earthquakes occur as the rock can no longer deform and ruptures
a. True
b. False
ANSWER: True
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The Pamir Knot is a complex tangle of east-west and north-south trending mountain ranges on the borders of Afghanistan, Tajikistan, Pakistan, and China
Indicate whether the statement is true or false
What is vog?
A) volatile organic gas B) vanadium oxygen gases C) vapor fog D) volcanic smog
A parcel of air at the surface is heated which expands the air and increases the parcel's volume. If the same number of air molecules occupy the greater volume, density decreases. The increase in volume results in lower pressure. What will happen to the air surrounding this parcel?
A. Less dense air flows in to replace the rising air. B. Denser air flows in to replace the rising air. C. More dense air rises at the surface. D. Less dense air sinks at the surface.
Over ________ pest species have so far evolved resistance to pesticides.
A. 300 B. 50 C. 1500 D. 100