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Unformatted text preview: ages and disadvantages in the
struggle for existence.
struggle Summary (cont.) Individuals best suited for the environment
survive and reproduce most successful.
survive Species change over time. Summary (cont.) Species alive today descended with modification
from species that lived in the past.
from All organisms on earth are united into a single
family tree of life by common descent.
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This note was uploaded on 02/13/2014 for the course BIO 301M taught by Professor Jasper during the Spring '08 term at University of Texas.
- Spring '08