91色情片

For millennia, climatic fluctuations have sent stressed-out species to
extinction and promoted rapid evolutionary change in those left behind. In
Extreme Environmental Change and Evolution Ary Hoffmann and Peter Parsons
explore in detail how environmental extremes can expose natural populations to
the hard glare of natural selection. For an academic text, a remarkably
stress-free read. Published by Cambridge UP, 拢19.95, ISBN 0521446597.