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Buy Global Change Discussion Assignment
1. The ozone layer in the stratosphere is very important to life on
earth, particularly organisms on land. It filters ultraviolet radiation
from the sun, protecting organisms and keeping the temperature on
earth at a tolerable level. Ozone in the troposphere is classified as
a pollutant. It can adversely affect the health of humans and other
(A) What is the function of the ozone layer in the stratosphere?
(B) What chemical reactions play a part in the degradation of the
ozone layer in the stratosphere?
(C) What is the source of the ozone in the troposphere? What
health problems can it cause?
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2. The ozone layer absorbs
(A) infrared radiation from the sun
(B) ultraviolet radiation from the sun
(C) positively charged ions
(D) heat radiated off earth’s surface
3. Which of these does NOT have a natural source?
(A) carbon dioxide
(B) CFCs
(C) nitrous oxide
(D) vapor
148 ❯ 500 AP Environmental Science Questions to Know by Test Day
4. What process do CFCs, chlorine, and bromine have in common
that leads to destruction of the ozone layer?
(A) polymerization
(B) deposition
(C) photodissociation
(D) buffering
5. The breakdown of the ozone layer is dangerous because a thin ozone
layer absorbs less
(A) UV radiation
(B) CFCs
(C) acid rain
(D) water vapor
6. In which season does the Antarctic ozone hole decrease by over 50%
(A) Antarctic summer
(B) Antarctic fall
(C) Antarctic winter
(D) Antarctic spring
7. The stratospheric ozone layer is crucial to protect living things on
earth. It is a natural layer of gas located in the upper atmosphere
that protects humans and other living things from
(A) infrared radiation
(B) the visible light spectrum
(C) gamma radiation
(D) ultraviolet radiation
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Global Change ❮ 149
Sun UV
Same as above
O O2 → O3
Figure 9.1
8. According to the diagram in Figure 9.1, what causes the oxygen
molecule to break apart in the formation of ozone?
(A) chlorofluorocarbons
(C) ultraviolet light
(D) O2
9. One pollution control measure in which companies can sell “credits”
for emissions is known as
(A) deposition credits
(B) tradable license
(C) deposition permits
(D) tradable permits
10. The Montreal Protocol, finalized in 1987, is a global agreement to
do what?
(A) reduce the use and release of chlorofluorocarbons into the
(B) help reduce acid rain by decreasing carbon dioxide emissions
(C) strengthen laws to stop the trade in endangered species
(D) reduce carbon dioxide emissions by increasing the development
of alternative energy sources
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