According to the text, __________ can remain potentially harmful for 250,000 years.
A) biomasses
B) radioactive wastes
C) carbon monoxide
D) acid rain
Correct Answer:
Verified
Q43: The world's population exceeded _ in 2013.
A)10
Q44: Which of the following contributes to carbon
Q45: Sufferers of _ often avoid public places
Q46: _ involves injecting a mixture of water,
Q47: Light pollution refers to
A)annoying, unnecessary and/or harmful
Q49: Most cancer researchers believe _ may be
Q50: In comparison with 1960, in 2013 each
Q51: Global warming and climate change is expected
Q52: The term "e-waste" refers to which of
Q53: The main concern about dumping computers in
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