Pollutants that are aerosols consist of
A) gases and liquids.
B) liquids and solids.
C) gases and solids.
D) gases, liquids, and solids.
B) liquids and solids.
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A population pyramid with nearly equally divided cohorts has almost vertical sides and is typical of an area with ________.
A. slow growth B. extremely slow growth C. rapid growth D. stable growth
Compounds which contain a carbon-carbon triple bond are classified as which of the following?
A) alkanes B) alkenes C) alkynes D) arenes
Of the following, which is NOT an example of a biotic environmental control?
a. fast-growing trees shading slower growers b. sheep grazing c. extended periods of below-normal temperatures d. coyotes feeding on rabbits
The "ozone hole" that causes concern among scientists and the public is an ozone depletion in the
A. Tropopause B. Thermosphere C. Troposphere D. Mesosphere E. Stratosphere