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Evolution _2 Relative Dating
Evolution _2 Relative Dating

... the older rock layers end up at the bottom of the sequence and the newer ones toward the top. The arrow shows the relative order of the rock layers from earliest to most recent. ...
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DO NOW

... The Tempo of Evolution • Gradualism: gradual change over a long period of time leads to species formation. • Punctuated Equilibrium: Periods of rapid change in species are separated by periods of little or no change. (Successful species may stay unchanged for long period of time. Major environmenta ...
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Basic Biology
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INSTRUCTIONAL COMPONENT 1 CALIFORNIA

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Describe an example of how natural selection influenced the

... into new species with distinct differences due to the demands of the environment. An example will be the red fox and kit fox. The red fox has a red coat to blend in the forest habitat, while the kit fox has a light coat to blend in the desert habitat. Adaptive radiation is the speciation of an organ ...
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living things - WordPress.com

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STEM-Exam-3-Earth-Sci-Study-Guide
STEM-Exam-3-Earth-Sci-Study-Guide

... 13. How does scientist know that the continents were at one time joined together and then moved apart? Continental drift and tectonic plates theory An example can be Fossils of the fern Glossopteris have been found in Africa, Australia, Antarctica, and South America. Scientists explain this observat ...
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Evolutionary history of life



The evolutionary history of life on Earth traces the processes by which living and fossil organisms have evolved since life appeared on the planet, until the present day. Earth formed about 4.5 Ga (billion years ago) and life appeared on its surface within 1 billion years. The similarities between all present-day organisms indicate the presence of a common ancestor from which all known species have diverged through the process of evolution. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.
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