The mighty Columbia River forms the boundary between Washington and Oregon, but this river and its tributary, the Kootenay River, begin in ________
Fill in the blank(s) with correct word
British Columbia/the Rocky Mountains
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As the climate becomes warmer in mountainous regions, the biological effects on mountain ecosystems will
A) include the spread of mountaintop species down to lower elevations. B) increase biodiversity at all levels as climates are more hospitable. C) be to erase all effects of climate formerly caused by temperature and rainfall. D) probably cause the extinction of high altitude species as their habitats warm.
Which of the following is most likely to be powered by photovoltaics?
A) A lighthouse B) A calculator C) A lawn mower D) An automobile
A(n) ________ is a common boundary where different parts of a system interact
A) sphere B) interface C) delineation D) geosphere
If waves approach the shore at an angle they
A. begin to break in water depths deeper than the wave base. B. die out before they reach the shore. C. bend so they approach the shore more directly. D. do none of these because waves do not approach the shore at an angle.