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THE ORGANIZATION OF THE INDIVIDUAL
THE FRAMEWORK OF THE BODY
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Aa Bb acid algae ancestors animals and plants apes aquatic archosaurs arteries blood body bones brain cambium capillaries carbon dioxide cavity characteristic chemical chlorophyll chromosomes circulatory system complex cord cytoplasm Devonian dicotyledons digestive division dorsal embryo energy environment enzyme evidence evolution existence female fertilization fishes flower fluid fossils function gametes gametophyte genes germ cells Gg Ww glands hair hormone human individual inheritance insects intestine known later layer legs living lymph male mammals membrane Metazoa modern muscle nerve nervous system neuron nucleus occur organisms original ovary oxygen pair Paleozoic parasitic phloem phylum Pleistocene pollen primitive produced proteins protoplasm Protozoa race region relationship reproduction reptiles respiration result root seed skin skull soil species spermatophytes spermatozoa spinal spore sporophyte stage stem structure substances surface teeth tion tissues triploblastic tube types various vascular vertebrates vitamin walls xylem zygote