Biology, 25.04.2020 05:02, russboys3

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word bank:
acid precipitation
burning fossil fuels
carbon monoxide
CFCs
nitrogen compounds
ozone molecules
particulate matter
photochemical smog
sunlight
UV rays
volcanic eruptions
water
wood-burning stoves
‌
‌ Fill in the blanks
Air conditioners and refrigerators made before 1996 can release
1._ into the air. These compounds react with sunlight and destroy
2. . This allows more harmful 3. to reach Earth’s surface, causing increased rates of skin cancer. Another kind of air pollution, 4. , is a mix of solid and liquid particles in the air. It can be caused by natural events such as 5. . It can also be caused by human activities such as 6. . A third type of air pollution, 7. , is a gas released from vehicles, industrial processes, and
forest fires. Indoor sources of this gas include 8.__ . A fourth type of air pollution is a brownish haze in the sky called 9. . It occurs
when carbon compounds and 10. react with sunlight and form new substances. The last type of air pollution, 11. _, forms when
rain or snow has a lower pH than normal rainwater. It is also caused by 12. to generate electricity or to run vehicles.

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word bank:
acid precipitation
burning fossil fuels
car...