Table of Contents
Choose the correct options for the following questions.
The residence time of NO and $NO_{2}$ in atmosphere are representative in days:
Difficulty: Easy
A:
Two and three
B:
Three and two
C:
Three and four
D:
Four and three
The percentage of $SO_{2}$ produced by volcano is:
Difficulty: Easy
A:
47%
B:
57%
C:
67%
D:
77%
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