1. Biology Chapter 2.1 Organisms and Their Environment

2. 2.1 Organisms and Their Environment  Ecology- study of organisms and their environment Biosphere – high in atmosphere to bottom of ocean Provided by the SeaWiFS Project, NASA/Goddard Space Flight Center and ORBIMAGE.SeaWiFSNASAGoddard Space Flight CenterORBIMAGE

3. 2.1 Organisms and Their Environment  Biotic Factors = Living  Abiotic Factors = Nonliving www.stock-photography.co.za/stock%20photograp... www.tworiversmarina.com/Mississippi%20River%2... www.mass.gov/.../images/multiLayerForest.jpg earthguide.ucsd.edu/.../acct/lzace/jellyfish.gif

4. 2.1 Organisms and Their Environment  Levels of Organization Individual Population Biological community Ecosystem www.knowledgebank.irri.org/.../image3.gif

5. 2.1 Organisms and Their Environment  Habitat – where an organism lives Can be changed by natural causes or humans www.ohvec.org/.../mountaintop_removal/007/57.jpgupload.wikimedia.org/wikipedia/commons/thumb/...

6. 2.1 Organisms and Their Environment  Niche- a position a species has in its environment No two sp. Can exist in the same niche in the same place at the same time  One will gain control over resources  The other must adapt, move elsewhere, or go extinct. y2u.co.uk/.../I_zq5/RN_Animal_Giraffe_1.jpg

7. 2.1 Organisms and Their Environment www.unu.edu

8. 2.1 Organisms and Their Environment  Survival Relationships Predator / Prey Relationship www.tiem.utk.edu/.../pred-prey.gph1.gif

9. 2.1 Organisms and Their Environment  Survival Relationships Symbiotic Relationships  Commensalism Remora/Shark Barnacles on whales  Mutualism Bacteria in lg intestines The Nile crocodile and the Egyptian plover N-Fixing Bacteria and plants  Parasitism Tapeworms Fleas, Lice Mistletoe www.scubaduba.com/gallery/shark2.jpg www.warrenphotographic.co.uk/.../cats/00955.jpg www.abc.net.au/.../img/f_barnacles.jpg www.dkimages.com/.../previews/887/45066290.JPG