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Biological evolution accounts for the diversity of species developed through gradual processes over many generations. |
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| Evolution |
Charles Darwin |
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A simple branching diagram may be used to classify living groups of organisms by shared derived (original) characteristics and expanded to include fossil organisms.
Biological evolution accounts for the diversity of species developed through gradual processes over many generations. |
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Charles Darwin used reasoning in reaching his conclusion that natural selection is the mechanism of evolution. |
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BrainPOP: Darwin |
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Independent lines of evidence from geology, fossils, and comparative anatomy provide the bases for the theory of evolution. |
Evidence for Evolution PPT PDF Notes | |
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Both genetic variation and environmental factors are causes of evolution and diversity of organisms. |
Natural Selection
PPT
PDF
Notes BrainPOP: Natural Selection |
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Extinction of a species occurs when the environment changes and the adaptive characteristics of a species are insufficient for its survival. |
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| Earth & Life History |
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Evidence from rocks allows us to understand the evolution of life on Earth. The rock cycle includes the formation of new sediment and rocks; and rocks are often found in layers, with the oldest generally on the bottom. |
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Evidence from geologic layers and radioactive dating indicates Earth is approximately 4.6 billion years old and that life on this planet has existed for more than 3 billion years. |
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Movements of Earth's continental and oceanic plates through time, with associated changes in climate and geographic connections, have affected the past and present distribution of organisms. |
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| Significant developments and extinctions of plant and animal life can be explained on the geologic time scale. | ||
| The history of life on Earth has been disrupted by major catastrophic events, such as major volcanic eruptions or the impacts of asteroids. |
Mass Extinctions
PPT
PDF
Notes BrainPOP: Extinctions |
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Patricia Ware Manhattan Beach Middle School 1501 Redondo Beach Avenue Manhattan Beach, CA 90266 310.318.7345 ext. 3105
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