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Acid Rain & D irect Harvesting

Acid Rain & D irect Harvesting. Unit 7-3 Notes Mr. Hefti – Pulaski Biology. Acid Rain ► What is it?. Precipitation w/ lower than normal pH Low pH values (< 7) are acidic. AR ► What causes it?. Sulfur and nitrogen compounds produced as a result of burning fossil fuels Coal

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Acid Rain & D irect Harvesting

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  1. Acid Rain & Direct Harvesting Unit 7-3 Notes Mr. Hefti – Pulaski Biology

  2. Acid Rain ►What is it? • Precipitation w/ lowerthan normal pH • Low pH values (<7) are acidic

  3. AR ►What causes it? • Sulfurand nitrogen compounds produced as a result of burning fossil fuels • Coal • Oil • Natural gas

  4. AR ►Why is it bad? • Alters the way organisms function • Disrupts food webs • Damages human-built structures

  5. AR ►What can be done about it? • Reduce dependency on fossil fuels • Neutralize lakes with lime

  6. Direct Harvesting ► What is it? • Destruction or removal of species in large quantities • Leads to: • Over-harvesting • Extinction

  7. DH ► What causes it? • People needlessly capture or kill organisms • Pets • Ornaments • To use body parts

  8. Magic potion made from ground up rhino’s horn

  9. Piano keys made from ivory

  10. DH ►Why is it bad? • The removal of a single species can disrupt an entire food web

  11. DH ►What can be done about it? • Lawshave been passed to protect certain species • Limitations to hunting and fishing have been established

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