Ozone is found in both the ozonosphere and as a component of smog. Discuss its properties and function in the ozonosphere, and also its destruction by anthropogenic chemicals and the international efforts undertaken to ameliorate the destruction
Also examine ozone's production and effects at ground level.
In a nutshell, stratospheric ozone protects the Earth from harmful UV radiation. Through a complex set of chemical reactions, CFCs and other ozone-destroying chemicals destroy ozone. International efforts, such as the Montreal Protocol, have sought to ban these chemicals. In the troposphere, though, ozone is a principal component of photochemical smog.
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Germanium, Ge (number 32), computer chips operate faster than silicon, Si (number 14), computer chips. So how might a gallium, Ga (number 31), chip compare with a germanium chip?
A. Gallium is located just below aluminum, which is widely known to be an electrical insulator. B. A gallium chip would be even faster because the gallium is more metallic. C. Gallium is more nonmetallic and so it does not conduct electrons very well. D. A gallium chip would be slower because its electrons are more loosely held.
Explain why, in Figure 4.2, the sequence of events shown would occur only if the fence was built the
day after the last earthquake What will be an ideal response?
With traditional intensive agriculture, farmers increase their crop yields by ____.
A. increasing their inputs of human and draft-animal labor B. using heavy equipment, along with large amounts of fossil fuels C. producing only enough for their family's needs D. increasing monocultures E. increasing greenhouse-raised crops
Which method is not used to detoxify hazardous and toxic wastes?
A. phytoremediation B. crushing and grinding C. bioremediation D. plasma gasification E. chemical treatment