What is tropospheric ozone and why are we not concerned with protecting it?
What will be an ideal response?
It is a pollutant and it does not prevent ultraviolet radiation penetration (known as smog).
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Which of the following is a perfect protein to meet human nutritional needs?
a. beef c. chicken eggs b. fish d. soybeans
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A compressor that uses a high-speed impeller to throw the refrigerant outwards is called a:
A) Reciprocating compressor. B) Centrifugal compressor. C) Rotary compressor. D) Screw compressor.
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Americans have the safest, most wholesome food supply in history
Indicate whether the statement is true or false.
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Permanent antifreeze is mostly ________
A) Ethylene glycol B) Kerosene C) Methanol D) Glycerin
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