Aerosols are typically removed from the atmosphere by:
A) falling precipitation.
B) settling to the ground due to the influence of gravity.
C) chemical decomposition.
D) traveling higher and higher above the earth until they escape into space.
Answer: A
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Which reptile group is considered to be the immediate ancestor of mammals?
a. captorhinomorphs b. pelycosaurs c. labyrinthodonts d. therapsids e. coelacanths
Urban sprawl and urban blight are serious problems for urban regions. However, the consequences are generally different. Urban sprawl generally results in problems associated with
A) the environment, while urban blight involves issues of social justice. B) public health, while urban blight involves issues of the environment. C) social justice, while urban blight involves issues of education. D) education, while urban blight involves issues of public health.
Which of the following correctly describes the chemical reactivity of citrate and isocitrate?
A) Both citrate and isocitrate can be oxidized. B) Neither citrate nor isocitrate can be oxidized. C) Citrate can be oxidized, but isocitrate cannot. D) Isocitrate can be oxidized, but citrate cannot.
Evangelista Torricelli, a pupil of Galileo, determined that
A) large-scale circulations of winds. B) air pressure varied with weather conditions. C) winds flow from airs of high to low pressure. D) atmospheric pressure is uniform in the troposphere.