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Evolution - Coggle Diagram
Evolution
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Uniformitarianism - The same geologic processes that change earth today have been at work in the past.
Large cumulative changes usually take a very long time.
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Plate Tectonics - The theory that explains how tectonic plates move around the Earth's surface and change shape.
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Fossil Evidence of Continental Drift - Mesosaurs fossils found in South America and Africa show that the continents were once joined.
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An Effect of Continental Drift - The Panama land bridge formed 3 million years ago joining north and south America.
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Catastrophism - The principle that geologic change occurs suddenly.
Catastrophic events are often unpredictable and change things quickly.
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Superstition - Principle states that younger rocks lie above older rocks in undisturbed rock layers.
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Index Fossil - Distinct , abundant, and wide spread.
Existed for a short span of geologic time
Used to date the rock layer they are found in
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Species - Organisms that share the same characteristics and adaptations. Can mate with one another to produce fertile offspring.
Evolution - The process by witch populations slowly change over time.
New species descend from older species.
Embryo Evidence - Most embryos look similar in their early stages
Embryos of organisms that have a closer genetic relationship to one another tend to look similar.
Fossils - The solidified remains or imprints of once-living organisms
Commonly found in sedimentary rock.
Fossil record - Historical Sequence of life Shows the order of evolutionary changes
Shows how the environmental conditions have changed on earth
Comparing Organisms - Scientists compare organisms, anatomy, and DNA to support the theory that species share common ancestors.
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