Give one reason why rhyolite flows are less common than basalt flows. What will be an ideal response?
Rhyolitic magmas are more viscous than basaltic magmas and tend not to reach the surface as
frequently.
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In an essay discuss the significant environmental issues facing South Asia
What will be an ideal response?
A region has just had a 100-year flood. That means that
A. another equally large flood will occur in one hundred years. B. another flood of that size cannot happen in the same year. C. a flood event of that size has a 1 percent probability of occurrence in the next year. D. All of the choices are correct.
Glaciation can take about ________ years, whereas deglaciation requires about ________ years
A) 10,000; 90,000 B) 1000; 100 C) 100; 1000 D) 100,000; 10,000
When the hinge line of a fold is not horizontal the fold is said to ________
Fill in the blank(s) with correct word