Using the examples of Mexico City and Los Angeles, discuss the special problems that vehicles create for urban outdoor air pollution
What will be an ideal response?
Mexico City and Los Angeles have one important thing in common, photochemical smog. Photochemical smog is a mixture of primary (nitrogen oxides and VOCs) and secondary pollutants (trophospheric ozone and more than 100 different toxic derivatives from their interaction in the presence of solar UV light). Both cities have geographic conditions that promote the formation of thermal inversions which can trap the smog near the ground for long periods of time and produce dangerously high concentrations of pollutants. The result is an assault of human respiratory systems that has caused thousands to die premature deaths. Los Angeles and Mexico City have both greatly improved the levels of smog by developing mass transit and by requiring strict pollution control technologies on vehicles.
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Complementary colors are a pair of colors that
A. produce white light when combined. B. share the same color scheme. C. are subtractive primary colors. D. are additive primary colors.
An explanation for why polar regions are colder than equatorial regions is that:
a. The sun never reaches these areas because of the tilt of Earth on its axis. b. Sunlight strikes the polar regions at an angle and spreads out over a much larger area. c. Sunlight is more intense at the poles. d. Earth is spinning slower at the poles. e. The earth is spinning slower and the precipitation is more intense at the poles.
A large source of carbon monoxide is smoking tobacco.
Answer the following statement true (T) or false (F)
List and briefly describe the four forces that shape the speed and direction of winds
What will be an ideal response?