SciencePlanner2/22/16 WU:Seating Chart CW:Vocabulary Video Clip Plate Tectonics Puzzle HW:Feel free to work on your foldable at home.

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SciencePlanner2/22/16 WU:Seating Chart CW:Vocabulary Video Clip Plate Tectonics Puzzle HW:Feel free to work on your foldable at home.

Vocabulary Part ll Precambrian – time from the formation of the Earth till the beginning of the Paleozoic era, life begins. (About 4 billion years) Palezoic – 542 mya to 251 mya. Reptiles, amphibians, fishes, worms, and ferns appear. Mesozoic – 251 mya to 65 mya. Dominated by dinosaurs and first birds. Cenozoic – 65 mya to present. Age of mammals, humans appear 150,000 years ago. Carl Sagans “Cosmic Calendar”