A struggle for existence inevitably follows from the high rate at which all organic beings tend to increase. Every being, which during its natural lifetime produces several eggs or seeds, must suffer destruction during some period of its life, and during... Science Sketches - Стр. 178авторы: David Starr Jordan - 1887 - Страниц: 276Полный просмотр - Подробнее о книге
| 1861 - Страниц: 716
...from the high rate at which all organic beings tend to increase. Every being which, during its natural lifetime, produces several eggs or seeds, must suffer...some season or occasional year, otherwise, on the principal of geometrical increase, its numbers would quickly become so inordinately great that no country... | |
| 1861 - Страниц: 824
...organic beings tend to increase. Every being which during its natural lifetime produces several eggs and seeds must suffer destruction during some period of...could support the product. Hence as more individuals arc produced than can possibly survive, there must in every case be a struggle for existence, either... | |
| 1861 - Страниц: 716
...from the high rate at which all organic beings tend to increase. Every being which, during its natural lifetime, produces several eggs or seeds, must suffer...some season or occasional year, otherwise, on the principal of geometrical increase, its numbers would quickly become so inordinately great that no country... | |
| Illinois State Agricultural Society - 1861 - Страниц: 736
...several e<rgs or seeds, must suffer destruction during some period of its life ; otherwise, on tli1-' principle of geometrical increase, its numbers would...inordinately great that no country could support the product. * * * There is no exception to the rnle that every organic being naturally increases at so high a rate,... | |
| James Samuelson, Henry Lawson, William Sweetland Dallas - 1876 - Страниц: 480
...from the high rate at which all organic beings tend to increase. Every being which during its natural lifetime produces several eggs or seeds must suffer...geometrical increase, its numbers would quickly become 80 inordinately great that no country could support the product. Hence, as more individuals are produced... | |
| Charles Darwin - 1864 - Страниц: 472
...during its natural lifetime produces several eggs dr~seeds,miiBlT"BTlffer destruction during Bom<y period of its life, and during some season or occasional...increase, its numbers would quickly become so inordinately erront that no .couulM could support" the^pKRluct. Hence as iimm indi"ri Jualsi are produced than can... | |
| Joseph Young Bergen, Fanny Dickerson Bergen - 1884 - Страниц: 266
.../y the high rate at which all organic beings tend to increase. Every being, which during its natural lifetime produces several eggs or seeds, must suffer...inordinately great that no country could support the product. . . . Linnaeus has calculated, that if an annual plant produced only two seeds — and there is no... | |
| Joseph Young Bergen, Fanny Dickerson Bergen - 1890 - Страниц: 288
...f\ the high rate at which all organic beings tend to increase. Every being, which during its natural lifetime produces several eggs or seeds, must suffer...inordinately great that no country could support the product. . . . Liuiiicus has calculated, that if an annual plant produced only two seeds — and there is no... | |
| 1898 - Страниц: 908
...from the high rate at which all organic beings tend to increase. Every being, which during its natural lifetime produces several eggs or seeds, must suffer...some period of its life, and during some season or occasionally year; otherwise, on the principle of geometric increase, the numbers would quickly become... | |
| Thomas George Gentry - 1900 - Страниц: 532
...produces several eggs or seeds, must necessarily suffer destruction during some part of that period, and during some season or occasional year, otherwise,...principle of Geometrical Increase, its numbers would become so inordinately excessive that no country would be able to support its product. Therefore, as... | |
| |