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Evolution
CPO Chapter 13
| Question | Answer |
|---|---|
| an inherited trait that helps an organism survive. | adaptatuion |
| the process of how organisms acquire adaptations over time | evolution |
| an organism from which others have descended | ancestor |
| a tree-like diagram that displays evolutionary relationships among living species and their ancestors. | cladogram |
| bod structures that have a common origin but do not necessarily perform the same function. | homologous structures |
| a historical sequence of life on Earth based on the sequence of fossils. | fossil record |
| the process by which organisms with favorable adaptations survive and reproduce at a higher rate than organisms with less-favorable adaptations. | natural selection |
| the variety of alleles in a population | genetic variation |
| occurs when the environment changes and tha adaptations of a species are no longer sufficient for its survival. | extinction |
| Organisms change over_______. | time |
| All organisms are descended from ________ __________ by a process of branching. | common ancestor |
| Evolution is _______. taking place over a long time. | gradual |
| The mechanism of evolution is _________ __________. | natural selection |
| Malthus was an early scientist that proposed the the human population grows fast than the _____ ______. | food supply |
| Food shortages results in a ________ ____ ___________. | struggle for existence |
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