The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 78
... causes them to dispatch impulses along the nerve - fibres to the brain . According to the theory most extensively held ... cause sensitive cells to be bumped against an overhanging shelf , and the distinction lies in the fact that each ...
... causes them to dispatch impulses along the nerve - fibres to the brain . According to the theory most extensively held ... cause sensitive cells to be bumped against an overhanging shelf , and the distinction lies in the fact that each ...
Página 383
... cause of extinction . or In perhaps the majority of cases , however , extinction is not due to so simple a cause . The specialized type is confronted with the competition or the attacks of new types which start from a higher level of ...
... cause of extinction . or In perhaps the majority of cases , however , extinction is not due to so simple a cause . The specialized type is confronted with the competition or the attacks of new types which start from a higher level of ...
Página 655
... cause of mortality , after diseases of the circulation and diseases of the lungs , is that outstanding puzzle , cancer ; per cent . of the deaths in 1928 were due to this cause . As everybody has heard , the death - rate from recorded ...
... cause of mortality , after diseases of the circulation and diseases of the lungs , is that outstanding puzzle , cancer ; per cent . of the deaths in 1928 were due to this cause . As everybody has heard , the death - rate from recorded ...
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