In the above HR diagram sketch, which star is a white dwarf?

A. A
B. B
C. C
D. D
E. E


Answer: E

Environmental & Atmospheric Sciences

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Population growth and wasteful water usage threaten to produce water shortages in many nations of the world

Indicate whether the statement is true or false

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Imagine you are charged with building a facility run entirely by renewable resources (with the possible exception of backup power). How would you evaluate which sources have the most potential?

What will be an ideal response?

Environmental & Atmospheric Sciences

The boiling point of methanol is 65°C, and the boiling point of ethanol is 78°C. Which of the following statements is true?

A. At 40°C, the methanol reacts with the ethanol. B. At 70°C, you would have methanol gas and liquid ethanol. C. At 50°C, you would have methanol and ethanol as gases. D. At 90°C, you would have methanol and ethanol as solids. E. none of the above

Environmental & Atmospheric Sciences

The French-speaking Canadians are concentrated in which of the following locations?

A. the Maritime Provinces B. Quebec C. Saskatchewan D. Vancouver, B.C.

Environmental & Atmospheric Sciences