q Shrinkage
of glaciers
q Thawing
of permafrost
q Later
freezing and earlier break-up of ice on rivers and lakes
q Lengthening of mid-to-high-latitude growing seasons
q Poleward
and altitudinal shifts of plant and animal ranges
q Declines
of some plant and animal populations
q Earlier
flowering of trees, emergence of insects, and egg-laying
in birds