Which of the following reasons explain why mafic lavas tend to erupt mildly?

a. Because it contains less silica bonds (so lower viscosity)
b. Because gases easily escapes
c. Because it contains high silica bonds
d. Both b and c
e. Both a and b


Answer: e. Both a and b

Environmental & Atmospheric Sciences

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The daily mean temperature shown in the figure (according to the standard meteorological definition) is [INSERT FIGURE 3-28. NO CAPTION]

A) 22 oC B) 20 oC C) 15 oC D) 18 oC

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Where does the Coriolis effect have the greatest impact?

a. at the equator b. at the Tropic of Capricorn and the Tropic of Cancer c. at thepoles d. at 45 degrees latitude in each hemisphere e. in the Northern Hemisphere

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The chemical constituents of sea salt that are not utilized or altered by biological processes are called nonconservative.

Answer the following statement true (T) or false (F)

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Generally, higher education and better health care systems lead to lower crude death rates

Indicate whether the statement is true or false.

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