Forests that experience high levels of acid precipitation expose trees to soil that has
A) less dissolved calcium and aluminum.
B) more dissolved calcium and aluminum.
C) more dissolved calcium but less dissolved aluminum.
D) less dissolved calcium and more dissolved aluminum.
D
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Ultramafic igneous rocks are composed almost entirely of ________.
A. calcite B. quartz C. feldspar D. diamonds E. ferromagnesian minerals
If current deforestation rates continue, about 40% of all the world's remaining intact forests will have been logged or converted to other uses in 20 years.
Answer the following statement true (T) or false (F)
Like hurricanes, polar lows normally have a warmer central core, strong winds (often gale force or higher), and heavy showery precipitation that unlike a hurricane, is in the form of snow
a. True b. False
The distance to an earthquake is found by comparing the arrival time of ____ waves
a. ?P and surface b. ?S and surface c. ?P and shear d. ?S and shear e. ?P and S