define these words???

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  • Evolution
  • Fossils
  • Transitional links
  • Biogeography
  • Continental drift
  • Homologous structures
  • Analogous structures
  • Vestigial structures
Aug 25th, 2015

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Is the change in a populations heritable traits over successive generations.


These are any remains trace or impression of a living thing that belongs to a former geological age.

Transitional links

Are any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.


It is the study of the places where animals and plants are distributed.

Continental drift

 Is a theory that explained how continents shift position on Earth's surface

Homologous structures

 It is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor

Analogous structures

These are similar in structure and function because they originated from the same ancestor long ago

Vestigial structures

Vestigial structures refers to genetically determined attributes that have apparently lost most or all of their ancestral function in a given species, but have been retained through evolution.

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Aug 25th, 2015

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