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| group of organisms that sharesimilar characteristics and can reproduce among themselves producing fertile offspring |
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| change in heredity characteristics over time |
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| the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations |
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| something in an expierement theat can change |
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| the principle or policy of achieving some goal by gradual steps rather than by drastic change. |
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| theory of, Biology. a hypothesis holding that the evolution of species proceeds in a characteristic pattern of relative stability for long periods of time interspersed with much shorter periods during which many species become extinct and new species emerge. Also called punctuationalism. |
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| the science dealing with the formation, development, structure, and functional activities of embryos. |
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| any of the modern or extinct bipedal primates of the family Hominidae, including all species of the genera Homo and Australopithecus. |
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| the species of bipedal primates to which modern humans belong, characterized by a brain capacity averaging 1400 cc (85 cubic in.) and by dependence upon language and the creation and utilization of complex tools. |
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| any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc |
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| of, pertaining to, or of the nature of sediment. |
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| the order comprising the primates. |
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| such as the human appendix |
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| in archaeology, the arrangement of artifacts or events in a sequence relative to one another but without ties calendrically measured time; the arrangement of artifacts in a typological sequence or seriation |
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| element that gives off a steady amount of radiation's it slowly changes |
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| having the same or a similar relation; corresponding, as in relative position or structure. |
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