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How do organisms survive with limited resources? PowerPoint Presentation
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How do organisms survive with limited resources?

How do organisms survive with limited resources?

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How do organisms survive with limited resources?

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  1. How do organisms survive with limited resources?

  2. Human Evolution

  3. Human Population Growth CB 52.22

  4. CB 52.12 What limits Carrying Capacity?…

  5. Webpages and Articles about Homo floresiensis (the video) http://www.pbs.org/wgbh/nova/sciencenow/3209/01.html (longer video) http://video.google.com/videoplay?docid=8604680088784253620(part 1 of 7) http://ngm.nationalgeographic.com/features/world/asia/georgia/flores-hominids-text http://www.nature.com/nature/focus/flores/index.html

  6. H. floresiensis: A new species?

  7. Asian island of Flores

  8. Liang Bua where remains were found

  9. Typical objects found. Tools and bones.

  10. Artists rendering of H. floresiensis

  11. floresiensis and sapien skull

  12. Comparison of size: Pygmy, European, and H. floresiensis

  13. Pygmy elephant

  14. What about the tools? Was floresiensis “smart”?

  15. H. Sapien and H. floresiensis brain

  16. Relative brain to body size

  17. The shape and size of the brain ofH. floresiensis indicates that it was organized differently than the brain of H. sapiens.

  18. So…Several individual skeletons were found of a small population ranging in age from ~90,000 - 18,000 years ago. They have relatively small brains, but might have been able to do sophisticated things.

  19. Homo floresiensis: Are they a distinct species, and if so, how are we related?

  20. Trait diversity may vary in different populations 57” 65” 73”

  21. Human Evolution

  22. H. floresiensis: A new species?

  23. Yes: the number of similar individuals, the dates of existence (~90,000-18,000 years old), and the different morphology.

  24. There is much controversy over H. floresiensis

  25. There is much controversy over H. floresiensis Alternate hypotheses and rebuttals: Skeletons represent humans with brain damage. Skeletons represent humans with severe iodine deficiency:http://dsc.discovery.com/news/2008/03/05/hobbit-human.html Rebuttal to iodine deficiency: http://johnhawks.net/weblog/fossils/flores/cretin-flores-faq-2008.html Wrist bones are very different from humans:http://www.sciencemag.org/cgi/content/abstract/317/5845/1743

  26. How do organisms survive with limited resources?