The brilliant colors around hot springs and geysers are ________
A) largely unexplained
B) best seen in the winter
C) very short-lived
D) due to algae
E) due to high pressure
Answer: D
Environmental & Atmospheric Sciences
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Indicate whether the statement is true or false.
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Describe the current state of the green revolution and where you see the future going.
What will be an ideal response?
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To receive an electrical shock there needs to be a
A. presence of moisture. B. reduction of body resistance. C. difference in voltage across your body. D. all of the above
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Of the past 2.5 billion years, what % have been ice ages?
A) 60-70% B) 10-20% C) 40-50% D) 70-80%
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