The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
Dentro del libro
Resultados 1-3 de 71
Página 621
... disease . We have seen that all living things are continually engaged in an exacting struggle with their environ- ments . For every single healthy animal or plant which attains maturity and hands . on its genes to future generations a ...
... disease . We have seen that all living things are continually engaged in an exacting struggle with their environ- ments . For every single healthy animal or plant which attains maturity and hands . on its genes to future generations a ...
Página 637
... disease known as scurvy . Nobody knew anything of the cause of this disease . It first appeared on a ship when she had been at sea for some weeks , and its onset was gradual . First the crew became weaker , less able to make efforts of ...
... disease known as scurvy . Nobody knew anything of the cause of this disease . It first appeared on a ship when she had been at sea for some weeks , and its onset was gradual . First the crew became weaker , less able to make efforts of ...
Página 655
... disease in question during the years 1921-3 , expressed as a percentage of the average death - rate from that disease . It will be seen that heart - disease , respiratory disease ( bronchitis and pneumonia ) and phthisis fall most ...
... disease in question during the years 1921-3 , expressed as a percentage of the average death - rate from that disease . It will be seen that heart - disease , respiratory disease ( bronchitis and pneumonia ) and phthisis fall most ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
Otras 62 secciones no se muestran.
Otras ediciones - Ver todo
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