A toxic ____________________ is a byproduct of any process that releases harmful compounds into the air.
Correct Answer:
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Q13: _ are compounds that rise into the
Q14: When coal burns, some minerals escape from
Q15: _ reacts in moist air to produce
Q16: During the _, about 2.4 billion years
Q17: _ in the stratosphere absorbs ultraviolet radiation.
Q19: The major legislation that dictates federal air
Q20: Smog is produced when automobile exhaust is
Q21: _ is the release of volatiles from
Q22: Earth's primordial atmosphere _.
A) contained no oxygen
B)
Q23: The rise of oxygen in the modern
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