The main downslope movement of subarctic and arctic landscapes is ________
A) permafrost
B) mass wasting
C) mud slides
D) rock glaciers
E) solifluction
Answer: E
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Which of the following is a mathematical statement of the ideal gas law?
A) PV = n/RT B) PV = nRT C) V = nP/RT D) PV = RT/n
What was different about the Russian Empire from other European empires?
A. It contained land in the Americas. B. It was mainly composed of adjacent land, while other empires were separated from the ruling country by oceans. C. It contained only people of a single language and ethnic group. D. It was formed in the fifteenth to the nineteenth centuries.
The soils in the central part of the United States used for growing wheat, corn and soybeans are classified as ________ soils
A) forest B) rainforest C) grassland D) desert E) wetland
Which term describes species that play crucial roles in helping to keep their ecosystems functioning?
A. cornerstone B. foundational C. keystone D. critical E. primary