1 billion years ago
[DOC File]Chapter 1: A Universe of Life - Sierra College
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C) 360 million years ago. D) 545 million years ago. E) 2.1 billion years ago. 162. The colonization of life onto land was closely tied to the. A) appearance of multicellular organisms B) development of photosynthesis. C) oceans being overcrowded. D) development of the ozone layer. E) the formation of the Earth’s magnetic field. 163.
[DOC File]Making a Geologic Time Line - Mrs. Corse-Scott's Biology Zone
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3. In the top left corner, make a scale. Label the scale: 6 cm = 1 billion years ago (Bya) 4. From the left side of the paper measure in 6 cm and make a vertical mark and label this mark 4 billion years ago (Bya). Measure and mark every 6cm thereafter, labeling with 3 Bya, then 2 Bya and finally 1 Bya. 5.
[DOC File]BIG ERA ONE - World History
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Complete the discussion by asking: “How old is the air?” to reinforce this concept. Note that part of the air (hydrogen and helium) is probably 13 billion years old, while other gases in the air (oxygen, nitrogen, et cetera) were created in stars and supernovae and range in age from 12 to 1 billion years.
[DOC File]Real Deep Ancestry Triangulation
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LUCA - about 3,500,000,000 years ago (3.5 billion years ago) @ Domain: Eukarya – abt 2,500,000,000 years ago (2.5 billion) * Kingdom: Animalia – abt 1,000,000,000 ...
[DOC File]Geologic Timeline Activity - UCSB MRSEC
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From this point, measure 30 cm and draw short line (about 2 cm) down the paper and label that 100 million years ago (mya). Continue measuring and labeling every 100 million years. If you would like, you can then go back and mark off 3 cm sections that represent 10 million year marks for 1 billion years.
[DOC File]Chapter 02
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6. Although scientist believe that the earth formed 20 billion years ago, evidence points to the fact that the earth and the rest of the solar system formed only about A. 5 million years ago. B. 1 billion years ago. C. 4.5 billion years ago. D. 10.5 billion years ago. E. 10 million years ago. 7.
[DOC File]Chapter 15
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Multicellular forms arose about 1.5 billion years ago. The descendents of these forms include a variety of algae, plants, fungi, animals. The oldest known fossils of multicellular organisms were small algae, living 1.2 billion years ago . The diversity of animal forms increased suddenly and dramatically about 535–525 million years ago in the ...
[DOC File]“Cracking the Code of Life” - Human Genome Project
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4 and some billion years ago – 1st speck of life on warm surface of a _____ Raw DNA looks like what in raw form? Eric Lander – geneticist found that it looks like _____ Human beings only have _____ as many genes as the fruit fly. DNA chain in _____ cell of the body
[DOCX File]Deep Time and You Homepage (U.S. National Park ...
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Label the marks from left to right "5 billion years ago," "4 billion years ago," and so on. Label it "Earth's Timeline." At the 4.5 billion year old mark, write "the Earth is formed." Divide the most recent billion year division into 10 equal, 100,000,000 year increments.
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