The Grenville orogeny was the culminating event of the amalgamation of Laurentia
a. True
b. False
True
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The three principles of sustainability are chemical cycling, reliance on solar energy, and ____________________
Fill in the blanks with correct word
What kind of erosion produces sinkholes?
A. wind erosion B. ocean wave erosion C. groundwater erosion D. stream erosion
The Fresh Kills Landfill ________
A) site will be converted into a public park B) is the United States' first landfill conversion project C) is New York's first and only modern sanitary landfill D) will remain open until late 2020 E) was abandoned in the late 1970s
In the Sahel, desertification is likely to continue because of ________
A) perennial drought B) mistakes of the United Nations C) expanding population D) decreasing numbers of grazing animals E) the presence of the Sahara to the north