28 pages matching existence in this book
Results 1-3 of 28
What people are saying - Write a review
We haven't found any reviews in the usual places.
Growth and Triumph of the Evolution
What Evolution Must Explain
12 other sections not shown
adaptation adult algae American amphibians animal kinds animals and plants anthropoid apes aquatic artificial selection behavior biological evolution biologists birds blood body bones brain branches brate called cavity character cocoons colonial color Cro-Magnon Darwin distribution earth echinoderms egg cells embryo environment evidence evidences of evolution evolution idea evolutionary existence explanation of evolution fact factors ferns fishes flowering plants fossils fundamental geologic golden gradatory heredity higher human evolution human future individuals insects islands Lamarck lancelet land living creatures lowest lution make-up mammals man's mind modified mollusks Monterey pine natural selection naturalists notochord ocean offspring one-celled organs paleontology parents pine plants and animals polyps prehistoric present produced Protozoa races reptiles rocks sea anemones sea urchins segments shell similar skeleton social inheritance societal evolution species sponges stages starfish structure swimming tion to-day trait trees types variations variety various vertebrates wings young