Atmospheric nitrogen is converted to nitrogen oxides ________
A) when fuels are burned at high combustion temperatures
B) in a photochemical reaction with ozone
C) by using catalytic converters on automobiles
D) when fertilizers containing nitrogen are applied to farm fields
A
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Environmental impact would be greatest mining for ____ ore
a. a high-grade b. a moderate-grade c. a low-grade d. a plentiful e. a low- to moderate-grade
Phoenician sailors were more skilled then Greek sailors, so they ventured beyond the sight of land for trade on a regular
basis. a. True b. False
The solar nebula theory of the formation of the solar system accounts for the differences in composition between the terrestrial and Jovian planets
Indicate whether the statement is true or false
The process that diffuses light in many directions by atmospheric particles and that contributes to blue skies and red sunsets is called _______________
Fill in the blank(s) with correct word