The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 242
... hundred different species - more than as many as are to be found in all the rest of the world - and many of them belonging to purely Baikalian genera . They have launched out into the most varied occupa- tions . There are deep - water ...
... hundred different species - more than as many as are to be found in all the rest of the world - and many of them belonging to purely Baikalian genera . They have launched out into the most varied occupa- tions . There are deep - water ...
Página 300
... hundred per cent . " Cau- casian " parent . In the next generation , by the usual Mendelian reasoning it can be shown a priori that there will be all sorts of mixtures and combinations ; and that is exactly what is found . There will be ...
... hundred per cent . " Cau- casian " parent . In the next generation , by the usual Mendelian reasoning it can be shown a priori that there will be all sorts of mixtures and combinations ; and that is exactly what is found . There will be ...
Página 544
... hundred miles from west to east , over fifteen hundred miles from north to south ; man's inroads into its green fastnesses are still negligible ; the only way to penetrate it is along its rivers and streams . Africa's forest is equally ...
... hundred miles from west to east , over fifteen hundred miles from north to south ; man's inroads into its green fastnesses are still negligible ; the only way to penetrate it is along its rivers and streams . Africa's forest is equally ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
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Términos y frases comunes
active algæ animals arthropods bacteria become birds blood body bones brain branches called capillaries carbon carbon dioxide cells Cenozoic changes chemical chromosomes colour creatures crustaceans digestive Echinoderms eggs elaborate embryo Eocene Everyman evolution example eyes fact female fertilized fish flatworms flowers fluid forms fossils gametes genes germ-plasm glands grow growth heart human Ichthyosaurs important individual insects intestine kidneys kinds land larvæ layer less limbs liver living things lobster lungs male mammals marsupials matter means ment microscopic million molluscs mouse mouth movements muscles mutations nervous system normal notochord Obelia organs ovary ovum oxygen pair parasitic phylum plants polyps produced proteins prothallus protozoa reproduction reptiles round secretion sense-organs sexual shell skeleton skin species spermatozoa sperms spores stage starfish stomach structure substances surface swim tail teeth thyroid tiny tion tissue to-day tube types variations various vertebrates whole worms