Which of the following chemicals is least likely to irritate breathing passages?
A) ozone
B) sulfur dioxide.
C) nitric oxide.
D) nitrogen dioxide.
E) lead.
E
You might also like to view...
Mt. Rushmore is composed of which type of rock?
A. Sandstone B. Basalt C. Magma D. Granite
When did a major population drift of African Americans from the rural south to the industrial cities of the Northeast and Midwest occur?
A) immediately after the Revolutionary War (1790s to 1820s) B) prior to the Civil War (1850s) C) during the decade of the Great Panic (1890s) D) between the two World Wars (1920s to 1930s) E) after the end of the Cold War (1990s)
________ is still an important part of the economies of coastal communities in Megalopolis
Fill in the blank(s) with correct word
Where podzolization occurs, the soil tends to be:
a. strongly basic. b. moderately basic. c. neutral. d. strongly acidic.