The hydrologic cycle requires an excess of evaporation over precipitation as averaged over the world's oceans.
Answer the following statement true (T) or false (F)
True
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Why is groundwater in an aquifer a nonrenewable resource?
A) It can take thousands of years for rainwater to percolate downward to recharge the aquifer. B) Once water is pumped out, it can never refill the aquifer because the rock changes its porosity. C) It is vanishing from earth for no apparent reason. D) The water in an aquifer comes from ancient seas trapped underground.
Hominids have existed on Earth longer than the dinosaurs did
a. True b. False
List earthquake hazards
Which of the following is true of fatty acids?
A) They are branched carboxylic acids containing 6 to 12 carbon atoms. B) They are unbranched carboxylic acids containing 6 to 12 carbon atoms. C) They are branched carboxylic acids containing 12 to 20 carbon atoms. D) They are unbranched carboxylic acids containing 12 to 20 carbon atoms.