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Thermal Pollution & Erosion

Thermal Pollution & Erosion. Unit 7-5 Notes Mr. Hefti – Pulaski Biology. The steam is not radioactive. The issue here is all thermal. Thermal Pollution ► What is it?.

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Thermal Pollution & Erosion

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  1. Thermal Pollution & Erosion Unit 7-5 Notes Mr. Hefti – Pulaski Biology

  2. The steam is not radioactive. The issue here is all thermal.

  3. Thermal Pollution ► What is it? • Power plants and industries use water from lakes or rivers as a coolant but return it to the environment at a higher than normal temperature

  4. TP ► What causes it? • Cold water is taken from great depths and returned warmer

  5. TP ►Why is it bad? • Species suffocate in the presence of warmer water • Warm water does not hold as much oxygen as cold water • Some organisms move away • Contributes to algal and bacterial growth

  6. TP ►What can be done about it? • Find other uses for heated water

  7. Erosion ► What is it? • The process by which earth’s surface is worn away by: • Water • Glaciers • Wind • Waves • Humans

  8. E ► What causes it? • Deforestation • Overgrazing • Poor land management

  9. E ►Why is it bad? • Nutrient-rich soil is washed away • Sediments contaminate water supplies • Desertification

  10. E ►What can be done about it? • Planting trees • Cover crops • Wind breaks • Terrace farming • Runoff barriers • Rotate pastures

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