Which process in the nitrogen cycle converts nitrogen into its most polluting form?
a. Denitrification
b. Mineralization
c. Nitrification
d. Immobilization
Answer: c. Nitrification
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The ratio of the length of an arc to the circumference of a circle is the same as the ratio of the number of degrees of the arc to _______degrees.
Fill in the blank(s) with the appropriate word(s).
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?Welds on stainless steel ____________ than welds on mild steel.
A. ?are a lot harder to do B. ?show contamination easier C. ?have a lot more porosity problems D. ?require a lot more skill and are much harder to learn
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__________ are diseases and infections that can be transmitted from animals to humans.
A. Viruses B. Pathogens C. Zoonoses D. Fungi
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What two pressures are created by air moving through the duct system?
What will be an ideal response?
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