In British Columbia, which of the following types of air masses is mainly responsible for heavy rain and snow?
A. cP
B. cA
C. mP
D. mT
Answer: D
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In 2000, ________ of United States wildland fires were caused by lightning.
A. 10% B. 85% C. 15% D. 26%
What are the dangers associated with pesticide use? How can biocontrol and use of crops with high genetic diversity help to decrease the amount of pesticides used?
What will be an ideal response?
Some colonial powers frequently forced or urged peasant farmers to dedicate part of their traditional paddy land to cultivating crops for export, a system called:
A) export processing B) cash cropping C) plantationism D) paddy slavery
Which two of the following rivers flow north from Siberia to the Arctic Ocean?
A) Zeravshan and Volga B) Dnieper and Ob' C) Amu Dar'ya and Syr Dar'ya D) Volga and Don E) Lena and Ob'