Rock salt and rock gypsum are what kind of mineral deposit?
A. hydrothermal
B. evaporite
C. pegmatite
D. placer
Answer: B
Environmental & Atmospheric Sciences
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A) goods B) services C) information D) capital E) all of the above
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If CFCs have not been widely used since the late 20th century, why are they considered a major greenhouse gas in the 21st century?
A) Although they have been banned, they are being use illegally B) CFCs are released by a number of natural processes, such as volcanoes C) Greenhouse gases such as methane will break down into CFCs D) CFCs can stay in the atmosphere for decades
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How does a mudflow differ from a debris flow? What will be an ideal response?
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List the major rivers of the European region:
Environmental & Atmospheric Sciences