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Humans and Ecology: What are we doing, what should we do, what can we do, and does it matter?

Humans and Ecology: What are we doing, what should we do, what can we do, and does it matter?. Why are species going extinct?. The complex molecules that comprise organisms are based on carbon. Fig 55.14. Carbon cycle. Solar energy: incoming and outgoing.

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Humans and Ecology: What are we doing, what should we do, what can we do, and does it matter?

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  1. Humans and Ecology: What are we doing, what should we do, what can we do, and does it matter?

  2. Why are species going extinct?

  3. The complex molecules that comprise organisms are based on carbon

  4. Fig 55.14 Carbon cycle

  5. Solar energy: incoming and outgoing http://www.esr.org/outreach/climate_change/basics/basics.html

  6. http://www.esr.org/outreach/climate_change/basics/basics.htmlhttp://www.esr.org/outreach/climate_change/basics/basics.html

  7. CO2 and other greenhouse gases keep heat from radiating back into space http://www.esr.org/outreach/climate_change/basics/basics.html

  8. CO2 levels in Hawaii and average global temp. Fig55.21

  9. Aren't these temperature increases just because of increased urbanization? Fig55.21

  10. Aren't these temperature increases just because of increased urbanization? http://science.nasa.gov/headlines/y2000/ast15nov_1.htm

  11. http://www.cabq.gov/albuquerquegreen/images/urban_heat_island.jpg/imagehttp://www.cabq.gov/albuquerquegreen/images/urban_heat_island.jpg/image

  12. A poorly sited temperature sensor in Marysville, California. The sensor is situation right next to an asphalt parking lot, instead in the middle of a grassy field, as it is supposed to be. The sensor is also adjacent to several several air conditioners that blow their exhaust into the air nearby. http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1419

  13. Annual average maximum and minimum unadjusted temperature change calculated using (c) maximum and (d) minimum temperatures from good and poor exposure sites (Menne 2010). http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1419

  14. Poor sites showed a cooler maximum temperature compared to good sites. http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1419

  15. For minimum temperature, the poor sites were slightly warmer. http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1419

  16. The net effect was a cool bias in poorly sited stations http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=1419

  17. http://www.esr.org/outreach/climate_change/basics/basics.htmlhttp://www.esr.org/outreach/climate_change/basics/basics.html

  18. Gases trapped in ice core bubbles can tell us about past climate conditions.

  19. http://www.esr.org/outreach/climate_change/basics/basics.htmlhttp://www.esr.org/outreach/climate_change/basics/basics.html

  20. http://www.esr.org/outreach/climate_change/basics/basics.htmlhttp://www.esr.org/outreach/climate_change/basics/basics.html

  21. Recent increases in global temperature have reversed a slight cooling trend

  22. Vikings in Greenland in the 1200-1400’s

  23. As the climate cooled, the Vikings were forced to abandon their outposts

  24. 370

  25. Effects of global warming are already visible http://www.worldviewofglobalwarming.org/pages/glaciers.html

  26. Relative contributions to Global Warming ~500 m people ~300 m people ~2.5 b people

  27. Humans and Ecology: What are we doing, what should we do, what can we do, and does it matter?

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