Evaporites consist of minerals precipitated from water.
a. true
b. false
Answer: a. true
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Which of the following best compares energy and nutrients?
A) Energy and nutrients flow one way through ecosystems. B) Energy and nutrients both cycle within ecosystems. C) Energy cycles within ecosystems, while nutrients flow only one way through ecosystems. D) Energy flows one way through ecosystems, but nutrients cycle within ecosystems.
Evaluate the following statement. "Human activities contributing to global warming could cause the oceans to switch to ice-age mode."
A) This statement is true. B) This statement is false. Changes in human behavior will alleviate any global warming trends. C) This statement is false. Ice ages only begin when Earth is a certain distance from the Sun. D) This statement is partially true. Global warming may cause a change in the oceans, but it is a natural process that is unrelated to human activity.
Three damaging hurricanes on the U.S. Atlantic and Gulf Coasts in 2011 or 2012 were
A) Irene and Sandy on the Atlantic Coast and Ike on the Gulf Coast. B) Irene and Sandy on the Atlantic Coast and Isaac on the Gulf Coast. C) Imelda and Sandy on the Atlantic Coast and Ike on the Gulf Coast. D) Imelda and Sandy on the Atlantic Coast and Isaac on the Gulf Coast.
What is NOT an issue with agriculture in the developing world?
A) Rice is a staple crop for much of the world's population. B) Subsidized agriculture from the developed world can undercut developing world farmers. C) Slave labor is often employed to grow tropical crops. D) Land is frequently concentrated in the hands of a small elite. E) Growing populations put pressure on systems of food production.