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Geologic Time Review

Geologic Time Review. Answers to p.126 and Study Guide Extra Review Questions. P. 126. Organic evolution Geologic time scale Eon Natural selection Species. P. 126. D D D A B. A A C B A. STUDY GUIDE. B B D D D A. D A D D C A. A D A A C B. STUDY GUIDE.

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Geologic Time Review

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  1. Geologic Time Review Answers to p.126 and Study Guide Extra Review Questions

  2. P. 126 • Organic evolution • Geologic time scale • Eon • Natural selection • Species

  3. P. 126 • D • D • D • A • B • A • A • C • B • A

  4. STUDY GUIDE • B • B • D • D • D • A • D • A • D • D • C • A • A • D • A • A • C • B

  5. STUDY GUIDE • Evolution of cyanobacteria • Disappearance of Ediacaran fauna • Dinosaurs as dominant life forms • Development of birds • Appearance of humans

  6. STUDY GUIDE • Land separated; changing climates; animals had to adapt to new environment or face extinction • Animals had no hard parts to create fossils; very little evidence has been found • Pangaea was formed; mass extinction; reptiles ruled the Earth • Needed protection from the sun; needed an atmosphere to trap in oxygen, carbon, and other gasses needed for life • Mesozoic: dinosaurs ruled the Earth; Cenozoic: mammals ruled the Earth

  7. EXTRA REVIEW QUESTIONS • How is geologic time divided into units? • Based on organisms • During which era were the Himalayan Mountains created? • Cenozoic • Order the time scale units from longest to shortest. • Eon, Era, Period, Epoch • What types of life-forms lived during the Mesozoic Era? • Birds, reptiles, angiosperms (flowering plants), mammals, marine life • What types of life-forms lived during the Cenozoic Era? • Birds, reptiles, angiosperms, mammals, marine life, humans

  8. EXTRA REVIEW QUESTIONS • What is the scientific name for humans? • Homo sapiens • How many years ago did appear? • 140,000 years • What was a life form during the Precambrian time? • cyanobacteria • What life forms existed during the Paleozoic Era? • Trilobites, amphibians, reptiles, fish (NO DINOS, BIRDS, or MAMMALS)

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