The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
Dentro del libro
Resultados 1-3 de 81
Página 209
... known , but others were lighter and better adapted to swift running . Over twenty species are known to have been evolved in these side- lines ; what brought their career to a close is uncertain . The next divergent branch began at the ...
... known , but others were lighter and better adapted to swift running . Over twenty species are known to have been evolved in these side- lines ; what brought their career to a close is uncertain . The next divergent branch began at the ...
Página 412
... known . Abruptly , without warning , they reveal a world of living things whose abundance and diversity are in striking contrast with the poverty of the preceding records . 66 In the Lower Cambrian ( III A 1 ) , sponges and lampshells ...
... known . Abruptly , without warning , they reveal a world of living things whose abundance and diversity are in striking contrast with the poverty of the preceding records . 66 In the Lower Cambrian ( III A 1 ) , sponges and lampshells ...
Página 637
... 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 any kind ...
... 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 any kind ...
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