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pollute (v)
pollutant, pollution, polluted
contaminate (v)
contaminant, contamination, contaminated
poison (v)
poisonous
reduce (v)
reduction
treat (v)
treated, untreated
preserve (v)
preservation
wild (a)
wildlife
environment (n)
environmental
extinct (a)
extinction
industry (n)
industrial
conserve (v)
conservation
protect (v)
protection
nature (n)
natural
electricity (n)
electrical,electric
reuse (v)
reusable
