biology terms and defenitions
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14 terms
Terms | Definitions |
|---|---|
 evolution | change in a kind of organism over time |
| theory | well tested explenation that unifies a broad range of observations |
| fossils | preserved remains or evidence of an efficient organism |
| natural varitaion | diffrences among individuals of a species |
| artificial selection | selection by human for breeding of useful traits |
| struggle for exsistence | completion among members of a species for food, living space, and other necesity of life |
| fitness | ability of an organism to survive and reproduce in its enviroment |
| adaption | inherited characteristic that increases an organisms chance of survival |
| survival of the fittest | process by which individuals that are better suited to their enviroment survive and reproduce |
| natural selection | process by which individuals that r better suited to their enviroment survive and reproduce mostly sucessful |
| descent with modification | principle that each living species has decended which change from another species over time |
| common decent | principle that all living things have a common ancestor |
| homologus structure | structures that have diffrent structure forms |
| vestgial organ | organ that serves no usefulo function in the organism |
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