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.
You might also like to view...
Human hunting during the Late Pleistocene may have caused the extinction of some large mammals
a. True b. False
The Grinnell Formation in Glacier National Park contains mudcracks that date back nearly 1.5 billion years. How can delicate sedimentary structures such as these be preserved?
What will be an ideal response?
Which of the following statements about taxol is false?
A) Taxol is no longer obtained primarily from the bark of the Pacific yew. B) taxol and paclitaxel are two different but related anticancer drugs. C) taxol has been successfully synthesized by chemists. D) taxol inhibits cell division by preventing the disassembly of microtubules.
A(n) ________ is a solid aggregation of ________
A) crystal; rocks B) element; crystals C) rock; minerals D) mineral; rocks E) mineral; crystals