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I. Age of the Earth Origins of Life A. Time Frames.

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Presentation on theme: "I. Age of the Earth Origins of Life A. Time Frames."— Presentation transcript:

1 I. Age of the Earth Origins of Life A. Time Frames

2

3 Figure 25.7

4 Table 25.1

5 B. Evidence

6 1. Fossil Strata Figure 25.4

7 2. Radiometric Dating Figure 25.5

8 II. Earth Changing Events

9 A. Temperature CyclingB. Sea Level Changes C. Shifting Continents Figure 25.13

10 Figure 25.14

11 Figure 25.15

12 III. Organism Diversity A. Before Life

13 1. Events a. Spontaneous Generationb. Early Atmosphere 2. OutcomesWhat was the most important molecule? Figure 4.2

14 B. After Life

15 1. Events 2. Outcomes Oxidizing atmosphere Eukaryotes and endosymbiont hypothesis

16 C. Explosions & Extinctions

17 1. EventsVolcanoes, Meteor Strikes, & Figure 25.16 Chicxulub

18 2. Outcomes & Competition New habitats and Niches Figure 54.3

19 IV. Phylogeny & Systematics

20 How to define parameters and why study? Classic Tree Figure 26.3

21 How to define parameters and why study? Classic Clade Figure 26.11a & b

22 Phylogeny and Cladistics

23 Phylogeny and Cladistics Figure 26.14

24 Strive and be alive.


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