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Water Pollution

Water Pollution

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Water Pollution

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Presentation Transcript

  1. Water Pollution

  2. The Problem • Humans use water bodies as an easy way to get rid of waste

  3. What Happens to Waste in Water • Some liquid waste can be diluted reducing their concentration • Materials that do not dissolve will be dispersed by waves and currents • Waste that can not be recycled by natural processes in the water will pollute the waters

  4. Terms to Know • Water pollutants- anything in the water that can harm organisms, including human beings • Water pollution- change in the physical or chemical condition of water or any change in its biological content that limits or prevents use or enjoyment of water

  5. Effects to Water • Alter taste, odor or color of water • Reduce dissolved oxygen for organisms living in water • Introduce substances hazardous to life • Threaten human health by contaminating water supply, swimming sites with disease causing microorganisms, and hazardous materials

  6. Types of Water Pollutants • Agricultural pollutants- fertilizers, pesticides, herbicides, and animal wastes from farms and ranches • Domestic pollutants- chemicals, debris, sewage, and wastes generated by people living in rural and urban areas • Industrial pollutants- debris and chemicals from mines, refineries, and manufacturing plants

  7. Pollutants Continued • Vehicular pollution- fuel emissions, oil spills, and ordinary trash • Boat & Ship pollution- discharge sewage and bilge water (wastewater used to wash out the inner hull)

  8. Aquatic Life Responses to Water Pollutants

  9. Biostimulation • Fertilizer in runoff promotes growth of plants and animals • Has the potential to create algal blooms (rapid growth of aquatic plants) • Potential for oxygen depletion if plants and animals exceed dissolved oxygen levels

  10. Dead Zones • Areas where fish, mollusk, and crustaceans suffocate due to continuous discharge of sewage and sludge

  11. Bioaccumulation • Large animals tend to have heavier concentrations of toxic chemicals because the amount of toxic chemicals found in an organism increases in a food chain from producers to consumers