Which United States location contributes to most of the exploitable sand?
A) Texas
B) Alaska
C) Oregon
D) Florida
B
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List and describe the sequence of events that occur during a cloud-to-ground lightning discharge.
What will be an ideal response?
The ideal texture for a soil to minimize the risk of pollution is one that
A) is very coarse, so that it drains efficiently. B) is very fine, so that it minimizes the contamination to groundwater. C) is very fine, so that it improves the ability to dissolve hazardous materials. D) is of moderate sized particles, to reduce ponding while still having some filtering capabilities.
Recent research suggests that ________ has/have contributed to the large drop in fertility rates in Brazil over the past several decades
A) exposure to environmental estrogens B) laws preventing women from having more than one child C) AIDS and malaria D) soap operas E) legalization of abortions
In tropical climates, where strong insolation makes temperatures high, all that is needed for intense daily convectional storms is:
A) a source of humidity B) the formation of cumulus clouds C) temperature inversion D) the arrival of the trade winds E) intense land breeze