Scientists have uncovered a surprising genetic shift that may explain how animals with backbones—from fish and frogs to ...
When most people picture animals, they tend to think of the big, familiar ones: dogs, birds, fish, maybe elephants or whales. The thing is, creatures like that are a tiny minority. Around 97% of all ...
Originally published 1938, 2nd edition published 1948. https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!1081471 ...
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