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Happy Thursday (10/16) Write your thoughts on these pictures . How do they relate to evolution?

Explore the history of life on Earth, from the formation of the planet to the development of diverse organisms, through fossils and biochemical evidence. Understand the role of natural selection in the theory of evolution.

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Happy Thursday (10/16) Write your thoughts on these pictures . How do they relate to evolution?

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  1. Happy Thursday (10/16)Write your thoughts on these pictures. How do they relate to evolution?

  2. History of Life on Earth • SB5.b- Students will evaluate the role of natural selection in the development of the theory of evolution. • b. Explain the history of life in terms of biodiversity, ancestry, and the rates of evolution. • c. Explain how fossil and biochemical evidence support the theory. • https://www.youtube.com/watch?v=dYphAH2tKYE • David A. 10 min Video/Intro

  3. History of Life on Earth • Began approximately ________________________. • Current speculations on formation of Earth • Cosmic debris collected and cooled • Planet experienced constant volcanic and geological upheaval • Anaerobic (no oxygen) • Finally began to cool and form liquid water

  4. Origin of Life: Prokaryotes • Most popular theory • _________________ a few million years after formation of Earth • First organisms prokaryotic • Select prokaryotes ________________________ • This created aerobic atmosphere

  5. Origin of Life: Eukaryotes___________cells appeared approximately ______________________ • _______________________ • Ancestors of eukaryotic cells ____________________to bacteria and algae cells • The ancestral eukaryotes formed a _____________ relationship and became ____________into the bacteria and algae cells

  6. Origin of Life: Eukaryotes cont. • Eukaryotic organisms continued to evolve • __________________ ____________________ • Increased genetic variation • New organisms developed • Gave rise to multi-cellular life

  7. Geological Time Scale • Represents the evolution of biodiversity • ___________: Precambrian, Paleozoic, Mesozoic, and Cenozoic • Each era is broken into periods

  8. Precambrian • Earth formed and _____________________ • Emergence of autotrophic prokaryotes (cyanobacteria) • Appearance of simple eukaryotes • _____________________begins • Multi-cellular organisms appear • Sponges, cnidarians, and annelids • Note: All life is aquatic!!

  9. Paleozoic Era543 Million Years Ago • __________________________ • relatively rapid appearance, of most major animal phyla • Approximately 490-443 MYA, _________________________ • ______________occurred at end of this era (252 MYA) • Wiped out 90-95% of aquatic life, 60-70% terrestrial life

  10. Mesozoic Era 248 Million Years Ago • Mammals, dinosaurs, birds and flowering plants appear • ______________________ • End of era ___________hit near the north coast of the present-day _____________ • 75% of life goes extinct • Nothing above 25kg (55lbs) survive

  11. Pangea • Pangea was a _____________ • Plate tectonics helped to _____________________ . • Caused drastic geological changes throughout the Mesozoic era into the Cenozoic era • Plates began to drift apart • ___________________________________________________________________________

  12. Cenozoic Era65 Million Years Ago to Present Day • After the mass extinction, _____________began to diversify into distinct groups • 500,000 years ago Homo sapiens and Neanderthals lived • 65,000 years ago Neanderthals die out

  13. Quick Recap • https://www.youtube.com/watch?v=ZSt9tm3RoUU • Life in 1 minute • https://www.youtube.com/watch?v=7PQURsc2SYs • Mr Parr Eras song

  14. Fossils • Study of fossils is called ______________ • Fossils are the _____________________ organisms found in the rock layers of earth • Found in sedimentary rock • Fossils are used to __________________ among extinct and existing organisms

  15. Fossil Record • Show evidence of evolution by providing “______________” of ancient organisms • Used to create _________________to show how modern day organisms __________ • Ancestry is the ______________________________________

  16. How Old Are Fossils? Grand Canyon

  17. Now for a song… • https://www.youtube.com/watch?v=RNSrNT-nIDE • Mr Parr • https://www.youtube.com/watch?v=ClJ5lwl_wM0 • Fossils Rock Anthem

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