Chapter 25 Slides Sections 1-3
Chapter 25 Slides Sections 1-3 Chapter 25 Slides Sections 1-3
• Radiocarbon dating can be used to date fossils up to 75,000 years old • For older fossils, some isotopes can be used to date sedimentary rock layers above and below the fossil AP Biology © 2011 Pearson Education, Inc.
Concept 25.3: Key events in life’s history include the origins of singlecelled and multicelled organisms and the colonization of land • The geologic record is divided into the Archaean, the Proterozoic, and the Phanerozoic eons • The Phanerozoic encompasses multicellular eukaryotic life • The Phanerozoic is divided into three eras: the Paleozoic, Mesozoic, and Cenozoic AP Biology © 2011 Pearson Education, Inc.
- Page 1 and 2: “…sparked by just the right com
- Page 3 and 4: Concept 25.1: Conditions on early E
- Page 5 and 6: • In the 1920s, A. I. Oparin and
- Page 7 and 8: Conditions on early Earth AP Biolog
- Page 9 and 10: Stanley Miller University of Chicag
- Page 11 and 12: Abiotic Synthesis of Macromolecules
- Page 13 and 14: • Adding clay can increase the ra
- Page 15 and 16: Self-Replicating RNA and the Dawn o
- Page 17 and 18: The Fossil Record • Sedimentary r
- Page 19 and 20: • Few individuals have fossilized
- Page 21: Fraction of parent isotope remainin
- Page 25 and 26: Table 25.1 AP Biology
- Page 27 and 28: Table 25.1b AP Biology
- Page 29 and 30: Figure 25.7-3 Cenozoic Humans Colon
- Page 31 and 32: Figure 25.UN03 1 4 2 3 AP Biology A
- Page 33 and 34: • By about 2.7 billion years ago,
- Page 35 and 36: Figure 25.UN04 1 4 AP Biology Singl
- Page 37 and 38: First Eukaryotes • Development of
- Page 39 and 40: 2 nd Endosymbiosis • Evolution of
- Page 41 and 42: Figure 25.UN05 1 4 2 3 AP Biology M
- Page 43 and 44: Figure 25.UN06 Animals 1 4 2 3 AP B
- Page 45 and 46: AP Biology
- Page 47 and 48: Figure 25.10 Sponges Cnidarians Ech
- Page 49 and 50: The Colonization of Land • Fungi,
- Page 51: Is there life elsewhere? Does it lo
Concept <strong>25</strong>.3: Key events in life’s<br />
history include the origins of singlecelled<br />
and multicelled organisms and<br />
the colonization of land<br />
• The geologic record is divided into the<br />
Archaean, the Proterozoic, and the<br />
Phanerozoic eons<br />
• The Phanerozoic encompasses multicellular<br />
eukaryotic life<br />
• The Phanerozoic is divided into three eras: the<br />
Paleozoic, Mesozoic, and Cenozoic<br />
AP Biology<br />
© 2011 Pearson Education, Inc.
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