The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 14
... century the Abbé Mendel made a series of breeding experiments , the full importance of which was not recognized at the time . The work was revived about the beginning of the present century and became the starting - point for a great ...
... century the Abbé Mendel made a series of breeding experiments , the full importance of which was not recognized at the time . The work was revived about the beginning of the present century and became the starting - point for a great ...
Página 14
... century , and since the middle of the guarantee against any possible abuse of the nineteenth it has become the leading strand confidence reposed in the investigators . of biological work . Before that there were The word vivisection ...
... century , and since the middle of the guarantee against any possible abuse of the nineteenth it has become the leading strand confidence reposed in the investigators . of biological work . Before that there were The word vivisection ...
Página 637
... century , when the navies and com- mercial ships of the world were being ravaged by a painful and dangerous disease known as scurvy . Nobody knew anything of the cause of this disease . It first appeared on a ship when she had been at ...
... century , when the navies and com- mercial ships of the world were being ravaged by a painful and dangerous disease known as scurvy . Nobody knew anything of the cause of this disease . It first appeared on a ship when she had been at ...
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