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12_T01

12_T01. Toxic Waste …. Heavy Metals: Pb, Hg, Zn, Cd – often deposited at the bottom of stream channels If deposited in floodplains will be incorporated into plants, crops and animals Examples: Mercury contamination of aquatic ecosystems; sourced:

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12_T01

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  1. 12_T01

  2. Toxic Waste … • Heavy Metals: Pb, Hg, Zn, Cd – often deposited at the bottom of stream channels • If deposited in floodplains will be incorporated into plants, crops and animals • Examples: • Mercury contamination of aquatic ecosystems; sourced: • from volcanoes and erosion of natural mercury deposits • Burning coal, incinerating waste, processing metals • Lead to e.g., lead or mercury contamination • Radioactive materials

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