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Air Pollution 的副本

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PRESENTATION OUTLINE

1.

AIR POLLUTION

Serena & Joshua
Photo by hartlandmartin
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7.

SCHOOL CLOSED

8.

Black Carbon

0.2micrometers carcinogens&heavy metal particles
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10.

30 years

increased by 465%
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13.

less high quality more poor quality

hearting system：over 20 million tons of brown coal
14.

NOT ONLY ONE CITY

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16.

BEIJING

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BEIJING

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KUNSHAN

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DELHI

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DELHI

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INDIA

22.

Global History of Smog Fighting

23.

SOLLUTION

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WHO DATA

25.

SQUARE DANCING

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Serena Zhao