| 000 | 02326nam a2200337 i 4500 | ||
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| 999 |
_c1922 _d1922 |
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| 001 | 1270990 | ||
| 005 | 20210926135950.0 | ||
| 008 | 750307s1975 nyua f b 001 0 eng d | ||
| 010 | _a 75006864 | ||
| 020 | _a0393092194 | ||
| 040 |
_aDLC _cDLC _dDLC _erda |
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| 082 | 0 | 0 |
_a575.0162 _221 _bD.C.O. |
| 100 | 1 |
_aDarwin, Charles, _d1809-1882. _97766 _eauthor |
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| 240 | 1 | 0 | _aOn the origin of species |
| 245 | 1 | 4 |
_aThe origin of species / _cCharles Darwin ; abridged and introduced by Philip Appleman. |
| 250 | _afirst edition | ||
| 264 | 1 |
_aNew York : _bNorton, _c[1975] |
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| 300 |
_a128 pages : _billustrations ; _c22 cm. |
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| 336 |
_2rdacontent _atext |
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| 337 |
_2rdamedia _aunmediated |
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| 338 |
_2rdacarrier _avolume |
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| 500 | _aIncludes index. | ||
| 504 | _aBibliography: p. 125-126. | ||
| 520 | _aDarwin’s theory is based on the notion of variation. It argues that the numerous traits and adaptations that differentiate species from each other also explain how species evolved over time and gradually diverged. Variations in organisms are apparent both within domesticated species and within species throughout the natural world. Variations in colors, structures, organs, and physical traits differentiate a multitude of species from one another. Heredity is the mechanism that perpetuates variations, Darwin argues, as traits are passed from parents to offspring. What is important about these variations to Darwin, though, is the way they allow species to adapt and survive in the natural world. He gives numerous examples of variations that illustrate the wondrous adaptations that allow species to survive in their natural environments: the beak that allows the woodpecker to gather insects, the wings that allow the bat to fly, the paddles that allow the porpoise to swim, and so on. Darwin hypothesizes that the minor variations we see within a single species—such as variations in size, shape, and color of organisms—are related to the more distinct variations seen across different species. His theory of evolution explains how variations cause the origin of species. | ||
| 650 | 0 | _aEvolution (Biology) | |
| 650 | 0 | _aNatural selection. | |
| 700 | 1 |
_aAppleman, Philip, _d1926- _97769 _eauthor |
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| 906 |
_a7 _bcbc _corignew _d1 _eocip _f19 _gy-gencatlg |
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| 942 |
_2ddc _cBK |
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