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Q: Biologists estimate how long ago species separated from a common ancestor using a technique called
A: Cladograms
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User: Biologists estimate how long ago species separated from a common ancestor using a technique called

Weegy: Cladograms
IfNotSo|Points 7291|

User: Biologists estimate how long ago species separated from a common ancestor using a technique called a molecular clock radiometric dating relative dating stratigraphy

Weegy: They use a molecular clock.
aaaaaaaaaaaaaaa|Points 3996|

User: _____ created oxygen in the early atmosphere. Photosynthetic bacteria Asteroids hitting the earth Plankton Volcanic eruptions Forests





Weegy: Asteroids hitting the earth created oxygen in the early atmosphere.
Expert answered|paral|Points 2202|

User: The Cretaceous-Tertiary extinction, the most famous of all the Big Five, has been attributed to what major event that triggered the fall of the dinosaurs? an asteroid hitting the earth increased competition from mammals rapid growth of forests on land surfaces glaciation

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Asked 9/21/2012 10:43:50 AM
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