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Card 6

Front

CFC's

Back

Preview of the front of card 6

Card 7

Front

Carbon monoxide

Back

Preview of the front of card 7

Card 8

Front

Carbon dioxide

Back

Preview of the front of card 8

Card 9

Front

Carbon gases

Back

Preview of the front of card 9

Card 10

Front

Mercury

Back

Preview of the front of card 10

Card 11

Front

Nitrogen

Back

Preview of the front of card 11

Card 12

Front

Oxygen

Back

Preview of the front of card 12

Card 13

Front

Acid rain

Back

Preview of the front of card 13

Card 14

Front

Man hole

Back

Preview of the front of card 14

Card 15

Front

Aerosol can

Back

Preview of the front of card 15
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