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CPO Chapter 13

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
Created by: doakes27