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Exploring Earth's Early Life and Evolution

Dive deep into Earth's history, from the ancient atmosphere to the evolution of life forms and the impact on our planet. Uncover the mysteries of stromatolites, dating techniques, greenhouse gases, and more.

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Exploring Earth's Early Life and Evolution

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  1. General and BioChem

  2. DNA and RNA

  3. Body Systems

  4. Genetics

  5. Evolution

  6. Cells

  7. Gen/BioChem DNA/RNA Body Systems Genetics Evolution Cells $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 $500

  8. A 20 mile band that surrounds the earth and contains all life is known as the __________. T or F Ancient Earth’s atmosphere consisted of a lot of oxygen

  9. False - very little oxygen Biosphere

  10. A 20 mile band that surrounds the earth and contains all life is known as the __________. What did stromatolites produce?

  11. oxygen Biosphere

  12. How many years ago did the first organism(protocells) appear on earth? ___ billion years ago Earth’s early atmosphere contain very little ________gas?

  13. 3.5 to 3.9 billion years ago Oxygen - 21%

  14. Eventually stromalites formed the _____ layer, which protects us from UV rays. Earth’s early atmosphere contain very little ________gas?

  15. ozone Oxygen - 21%

  16. Name 1 of the 2 types of dating discussed in the chapter? What is the process that occurs in all living things that produces CO2?

  17. Relative or radiometric

  18. If two half lives pass, how much C14 is left? ____% What is the process that occurs in all living things that produces CO2?

  19. 25%

  20. How old is the earth? 3.8 billion years old 4.2 billion years old 4.6 billion years old or 4.6 million years old What part of our atmosphere do planes fly in ?

  21. 4.6 billion years old

  22. T or F Only a small fraction of all the species exist today about 99% species of species are extinct What part of the atmosphere contains most of the earth’s air currents?

  23. True

  24. Where in the United States is there a great example of sedimentary rocks. It’s a great example of relative dating. Yellowstone New Jersey Yosemite Grand Canyon What layer of the earth contains the ozone?

  25. Grand canyon

  26. In the grand canyon where would the oldest fossils been found. TOP MIDDLE BOTTOM Do clouds and snow reflect or absorb sunlight?

  27. At the bottom Reflects - cooling the Earth

  28. On the geological time scale what era did humans evolve? Precambrian Paleozoic Mesozoic Cenozoic True or False The earth is closest to the sun in the summer

  29. cenozoic

  30. Vertebrates first evolve in the _________era. Precambrian Paleozoic Mesozoic Cenozoic Another name for zero degrees latitude is

  31. paleozoic

  32. T or F In the Precambrian era only unicellular prokaryotes exist Why does the equator get so much rain?

  33. False- Multicellular Eukaryotes At zero degrees the equator heats up fast and the heat rises as it cools it releases rain..

  34. The idea that nonliving material can produce life. Biogenesis Spontaneous generation Spontaneous combustion The Great Basin Desert in the U.S. is a desert. How does a mountain range develop this dry condition?

  35. On the west side of the mountain moisture is released as it climbs east side-dry air comes down an takes moisture out of the earth Spontaneous generation

  36. In Redi’s experiment what was used as the independent variable? Flies Meat Maggots Covered jar June 21

  37. Towards Covered jars

  38. Prior to life on earth simple organic molecules evolved into complex organic molecules. Which are carbs, nucleic acids and_____. Why did scientist Charles Keeling take a reading of CO2 levels in Hawaii ?

  39. Proteins

  40. What era did dinosaurs roam the earth? Precambrian Paleozoic Mesozoic Cenozoic Why do CO2 levels rise during the winter?

  41. Mesozoic

  42. What era did life first evolve ? Precambrian Paleozoic Mesozoic Cenozoic Name one greenhouse gases.

  43. Precambrian CO2, water vapor, CFC’s methane and nitrous oxide

  44. When all of the land masses were one it was called___? Where do CFC’s come from?

  45. Pangaea Aerosol cans, air conditioners, refrigerators

  46. Who was the first scientist to disprove spontaneous generation? (of macro organisms) Redi Pasteur Spalinzini Miller & Urey

  47. -carpool -bicycle -lower your housing heat -plant trees -insulate the house Francesco Redi

  48. What scientist disproved spontaneous generation of microorganisms? Redi Pasteur Spalinzini Miller & Urey he

  49. Louis Pasteur Absorbs UV light

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