Producers add nitrogen in the form of nitrates and ammonia
Indicate whether the statement is true or false
T
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A turbocharger or supercharger changes the effective ____________________ of the engine.
Fill in the blank(s) with the appropriate word(s).
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Agricultural insecticide runoff is an example of a nonpoint source of water pollution
Indicate whether the statement is true or false.
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Gas fired rooftop units are normally vented though
A) Draft hoods connected directly to the unit B) A separate power venter C) Double wall vent pipe connected to the top of the unit D) Double wall vent pipe connected to the side of the unit
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The O-ring is considered to be the most common __________ ______ seal
Fill in the blank(s) with correct word
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