Magmas with the highest percentages (> 65%) of silica are called ____
A)mafic
B)felsic
C)intermediate
D)ultramafic
E)ultrafelsic
B
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Using Map T-1, the “Hawaii, Hawaii,” topographic map (scale 1:250,000; contour interval 200 feet), calculate the gradient of Mauna Loa (19°28'17"N, 155°35'41"W) along line AB, from the 5000', contour (near Point A) toward the summit. On the edge of a piece of paper measure out a distance of 10 miles using the graphic map scale, and then determine the elevation change over that distance.
In this problem, you will compute the gradients of Mauna Loa in Hawai‘i, Mount Vsevidof in Alaska, and SP Mountain in Arizona. (You may also determine the elevation changes and distances needed to calculate these gradients by using Google Earth™.) The recommended starting point and distance to measure are given for all three volcanoes.
Costa Rica is considered a superpower of biodiversity, with an estimated 500,000 plant and animal species. This biodiversity is chiefly a result of the ____.
A. country's small size B. country's geographic location and its government's strong conservation efforts C. lack of deforestation throughout the country's history D. careful use of natural resources by its indigenous people throughout its history E. government subsidies for the conversion of forestland to rangeland
Which of the following is true of fevers?
A) An increase in body temperature never has beneficial effects. B) A 1°C increase in temperature can be protective. C) A 3°C increase in temperature is invariably fatal. D) None of the above is true.
Describe the ice crystal process in making precipitation
What will be an ideal response?