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Should We Mourn the Dinosaurs?
Why save endangered species? There have always been
Evolution Geographic variation Geographic speciation
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African agriculture AMAX American animals areas beauty biological biologists birds breeding butterfly captive Checkerspot chemical chimps climate condor conservation coral countries Crested Butte crops dinosaurs diversity E. O. Wilson Earth ecological economic Ecoscience ecosystem services elephants endangered species energy environment environmental evolution evolved example exterminated extinction fauna fishes flora forest Galapagos genetic gorillas grazing herbivores Homo sapiens human population hunters hunting impact important increase insects Inupiat islands IUCN killed land Lepidoptera less living loss Lycaenidae mammals million National Park natural ecosystems Norman Myers Nymphalidae organisms ORVs P. R. Ehrlich penguins percent pesticides plant species Poaceae poisons pollution populations and species potential predators pressure problem programs protect reef relatively reserves Rhino rich Science Snail Darter snakes soil speciation survival Tellico dam threatened trees tropical moist forests tropical rainforests United whales wild wildlife zoos