Geosystems Exam 2 review - Scientific American 1 Origin of...

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Scientific American 1. Origin of Water on Earth Notes: Jupiter’s Moon Europa.  Bombardment Period: the initial  influx of meteoric material that  probably endowed Earth with  more than enough water for the  oceans. Comets and the  asteroid belt. Venus and Mars  were potentially in the  inhabitable zone. The  greenhouse effect. The  conditions that formed and  maintain the oceans—an orbit  in the habitable zone, plate  tectonics creating ocean  basins, volcanism driving a  carbonate-silicate cycle, and a  stratified atmosphere that  prevents loss of water or  hydrogen—are unique among  the planets in our solar system. 2. Rulers of the Jurassic Seas Notes: Ichthyosaurs= fish  shaped reptiles, reigned for as  long as dinosaurs.  Ophthalmosaurus.  Temnodontosaurus. Evolved  not from fish but from land- dwelling animals, which  themselves had descended  from an ancient fish.  Reptilian  characteristics from the group  Diapsida. Utatsusaurus= the  oldest ichthyosaur. Bones of  fish-shaped ichthyosaurs are  closely packed—without skin in  between—to form a solid panel.  Temnodontosaurus’ eyes were  the largest of any animal.  Deep  divers. Many characteristics of  ichthyosaurs—including the  shape of their bodies and  backbones, the size of their  eyes, their aerobic capacity,  and their habitat and diet— seem to have changed in a  connected way during their  evolution. Don’t know why they  became extinct.
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  • Fall '07
  • TheodoreChamberlain
  • Ground Water, Continental shelf, Moraine, ft. long sea

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