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| | Nat' Academies Press, Biodiversity (1988) |
 | | Where conservation biologists identify threatened but critical coevolutionary links, especially those between keystone species essential to ecosystem stability and diversity, sustaining these links for a time by scientific management of predators, competitors, even of environmental chemistry, microclimate, and with reintroductions, may be our only option for preservation. |
 | | Perhaps, as H.L.Mencken is reported to have said in a different context: “For every complex problem there is a simple answer and it is wrong.” Most losses of biological diversity, to say nothing of lost ecological services, are quite beyond human ability to repair. |
 | | Survival of mouse embryos frozen to −196° and −269°C. Science 178:411–414. |
| www.nap.edu /openbook/0309037395/html/261.html (8128 words) |
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