COPA

Digital Repository for Área de Conservación Guanacaste, a World Heritage Place.

Browsing Ciencia e Investigación by Title

Browsing Ciencia e Investigación by Title

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  • Yes? 
    Janzen, Daniel H. (1978-12)
    vices. As a symbiotic alternative, plants have evolved more easily obtainable food sources such as extra-floral nectaries; these and other devices have conferred on the comparatively sedentary (and often aggressive) ants a ...
  • Yucatan Meteor: The Real Impact 
    Janzen, Daniel H. (1992-11-13)
    The caprice of one large meteor hitting the earth 65 million years ago (Richard A. Kerr, Research News, 14 Aug., p. 878) is responsible for the existence of humanity. Had the dinosaurs survived, with all their capacity ...

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