Climate change is one of the main factors in "wiping out most life on earth." Habitat fragmantation means that flora and fauna cannot shift (generally poleward)

Climate change is one of the main factors in "wiping out most life on earth." Habitat fragmantation means that flora and fauna cannot shift (generally poleward) to remain in regions they are suited to climatically, so the effects of climate change on biodiversity are worse than they would be otherwise. Even without habitat fragmentation, or the other pressures humans exert on the biosphere, the rate of climate change is such that it alone could potentially induce a mass extinction. I do agree that the biosphere as a whole should be the primary concern and the focus on only one component, namely climate change, is incredibly short sighted.