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Diamond Enthusiast

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. What two types of changes led to the end of geologic eras?
 
Posts: 8657 | Location: BLONDEVILLE, USA | Registered: 06-07-02Reply With QuoteEdit or Delete MessageReport This Post
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Physical changes (such as the cooling of the earth, or other major changes in the climate), and biological changes (such as mass extinctions, or the evolution of a new type of life form (such as amphibians evolving from fish).
 
Posts: 5894 | Location: Indiana | Registered: 06-13-02Reply With QuoteEdit or Delete MessageReport This Post
Diamond Enthusiast

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Thanks again..jeeze ill never be able to learn all of this.. Eek
 
Posts: 8657 | Location: BLONDEVILLE, USA | Registered: 06-07-02Reply With QuoteEdit or Delete MessageReport This Post
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