science words
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each of the black spaces below before clicking
on it to display the answer.
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| species | a group of organisms that share similar traits and can reproduce fertile offspring
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| competition | a struggle between individuals and species for resources such as food living space mates and other resources
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| natural selection | any variation that makes an organism better suited to its envoronment
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| evolution | a change in a species over time
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| Darwin | the naturalist who proposed the theory of evolution by natural selection
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| variation | an inherited trait that makes an individual different from other members of its species
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| population | all of the individuals of a species living in the same area
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| adaptation | the mechanism of evolution where organisms with the traits best suited to the environment survive and reproduce
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| mutations | permanent changes in an organisms genes
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| Lamarck | the scientist who proposed the theory of acquired characteristics
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| homologous structures | body parts of similar orgin and structure
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| geographic isolation | when a new species is formed by a seperation of a mountain
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| vestigial structures | body parts with no function
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| radioactive dating | using radioactive elements to find the age of a fossil
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| embryology | the study of developing organisms
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| relative dating | using rock layers to find age of a fossil
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| gene pool | all genes in a population that are available for reproduction
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| fossils | remains of prehistoric organisms
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| fossil record | evidence of organisms that have lived through out time
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| dna evidence | evidence for evolution
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| linneaus | swedish naturalist who developed the biological classification system
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| archaebacteria | found in hot springs and salt ponds kingom of the domain called archaea
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| plantae | includes bryophyta pterophyta and coniferophyta
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| kingdom | 2nd largest group in biological classification
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| eubacteria | causes salmonella and streptococcus
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| domain | largest group in the biological classification system
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| aristotal | developed the first classification system
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| fungi | includes mushrooms and yeast
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| dichotomus key | tool used to identify unknowen organisms
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| archaea | includes the archaebacteria kingdom
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| animalia | includes mammals
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| eukarya | has all the main living organisms like animals and plants
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| phylum | 3rd largest group in the biological classification system
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| protista | includes protist
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| bacteria | has the eubacteria kingdoom
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| field guide | used to identify different animals and plants
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| divisions | smaller groups in which plantae is divided in to
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