Chapter+12+Resources

12.1 The Fossil Record ISOTOPES: http://www.chem4kids.com/files/atom_isotopes.html 12.2 The Geologic Time Scale INDEX FOSSILS: http://www.msnucleus.org/membership/html/jh/earth/stratigraphy/images/index.gif 12.3 Origin Of Life RIBOZYMES: http://www.bing.com/images/search?q=Ribozyme+&view=detail&id=B3E1179CD2E879ABEAF32A176A84F78011361225&first=0&FORM=IDFRIR 12.4 Early Single-Celled Organisms Endosymbiosis http://www.baileybio.com/plogger/images/ap_biology/powerpoint_-_kingdom_protista/theory_of_endosymbiosis.jpg 12.5 Radiation Of Multicellular Life cambrian Explosion: http://www.fossilmuseum.net/Paleobiology/CambrianExplosion.htm 12.6 Primate Evolution http://anthro.palomar.edu/earlyprimates/first_primates.htm