Why do skiers get sunburned so easily?
What will be an ideal response?
Because the snow reflects almost all of the visible and ultraviolet radiation, and the skin is exposed to radiation both from the sun and from the snow.
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Are most forest wildfires natural or are most caused by people?
What will be an ideal response?
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Where did British and French forces nearly go to war over Sudan in 1898?
a. Khartoum b. Omdurman c. Fashoda d. Agadir
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How many air curtains are used in a multi-deck open display freezer?
What will be an ideal response?
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A good way to fasten insulation to the inside of sheet metal duct is to use ____.
A. "S" fasteners (clips) and drive clips (cleats) B. staples and tape C. self-tapping screws and draw bands D. tabs and adhesives
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