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P_ _ _ _ _ _D
POLLUTED
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D_ _ _ _ _ _ O_
DISPOSE OF
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C_ _ _ _ _ _ _ _ _ _ N (12 chữ cái)
CONSERVATION
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E_ _ _ _ _ _ N
EMISSION
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E_ _ _ _ _ _ _M
ECOSYSTEM
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D_ _ _ _ _ _ _ _ _ G
DISCHARGING
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R _ _ _ _ _ _ T_ _ _ _
RUBBISH TIPS
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C_ _ _ _ _ _ _ _ _ _ _ N (13 chữ cái)
CONTAMINATION
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B_ _ _ _ _ _ _ _ _ _ _ E
BIODEGRADABLE
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E _ _ _ _ _ _ _ _ N
EXTINCTION
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H_ _ _ _ _T
HABITAT
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G_ _ _ N
GREEN
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D_ _ _ _ _ _ _ _ _ _ _ N
DEFORESTATION
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R_ _ _ _ _ E
RECYCLE
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S_ _ _ _ E
SEWAGE
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F_ _ _ _ _ F_ _ _ _
FOSSIL FUELS
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