Dangers to underground coal miners include all of the following except
A. explosion of natural gas pockets.
B. respiratory illness due to breathing silica.
C. mine collapse.
D. radioactive radon gas.
Answer: B
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Orographic uplift is usually associated with rising air:
A) over the great plains. B) along the Gulf of Mexico coast. C) over oceans. D) along the windward side of mountains.
Explain the features of the marine west coast climate
What will be an ideal response?
If a country is experiencing a negative net migration rate, then
A) more people are leaving the country than moving to it. B) more people are moving to the country than leaving it. C) a negative net migration rate does not tell us anything. D) more people are dying in the country than are being born. E) the number of people leaving the country is equal to the number moving there.
In a region of eastern Washington State known as the Palouse, farmers grow wheat on steep, sloped hills. Which of the following agricultural practices might be of greatest benefit in this region?
A) Use of shelterbelts B) Contour strip farming C) Irrigation D) Repeated plowing