Saudi Arabia has relatively large proven reserves of
A) coal.
B) petroleum.
C) natural gas.
D) tar sandstone.
E) All of the above
Answer: B
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National Forests and Parks across the United States, from the Rockies to the Smokies, operate under a view of natural resource use built on ________ and the idea that natural resources can be used responsibly
A) preservation B) conservation C) deforestation D) modernization E) economic development
What do muscovite and biotite have in common?
A) They have identical chemical compositions. B) They are the same color. C) They have the same type of cleavage. D) They have the same luster.
Shifting agriculture (slash-and-burn agriculture)
A. relies on one or two primary crops. B. is commonly practiced in grasslands. C. increases the fertility of the soil for several years. D. involves temporarily removing a small portion of a forest.
What % of tropical disturbances die out before ever evolving into more powerful systems?
A) 20% B) 33% C) 57% D) more then 90%