bear might not be considered a species under some species concepts . [ ] in general, terrestrial amniote invasions ofthe sea have become more frequent in the cenozoic than they were in the mesozoic. factors contributing to this trend include the increasing productivity of near-shore marine environments...
of u.s. government agencies branches ofthe u.s. government budget ofthe u.s. government buying from the u.s. government auctions and sales collectibles, books, and more surplus sales by state contact elected officials contact government by topic forms, by agency state, local, and tribal governments...
activin signal from the cell surface to the cytoplasm and is thus regulating many physiological and pathological processes including neuronal differentiation and neuronal survival, hair follicle development and cycling, fsh production by the pituitary gland, wound healing, extracellular matrix production...
ofthe algal cell walls, and may penetrate the walls. [ ] the algae may lose up to % of their sugar production to the fungus. [ ] ecology[ edit ] lichen associations may be examples of mutualism , commensalism or even parasitism , depending on thespecies. there is evidence to suggest that the lichen...
from other ant species. when two ant colonies meet, they sometimes estimate each other's strength by engaging in a bit of pushing and shoving, apparently tallying the size and number ofthe opposition. this behavior is thought to allow them to retreat in the face of a stronger opponent before matters...
"glacial-interglacial cycles ofthe upper pleistocene had a major influence on the evolution" of rangifer tarandus and other arctic and sub-arctic species. isolation of rangifer tarandus in refugia during the last glacial – the wisconsin in north america and the weichselian in eurasia-shaped "intraspecific...
"glacial-interglacial cycles ofthe upper pleistocene had a major influence on the evolution" of rangifer tarandus and other arctic and sub-arctic species. isolation of rangifer tarandus in refugia during the last glacial – the wisconsin in north america and the weichselian in eurasia-shaped "intraspecific...
( ge ) meaning "earth". in greek mythology gaia was the mother goddess who presided over the earth. she was the mate of uranus and the mother ofthe titans and the cyclopes. gaiana f ancient greek (latinized) latinized form ofthe greek name γαιανη (gaiane), a derivative of gaia . this was the name of...