 In North America, for example, restoring native prairie grasses is a basic ecosystem-rebuilding activity for reinhabitants of the Kansas Area Watershed Bioregion in the Midwest, whereas bringing back salmon runs has a high priority for Shasta Bioregion in northern California.Using geothermal and wind as a renewable energy source fits Cascadia Bioregion in the rainy Pacific Northwest.Less cloudy skies in the Southwest's sparsely vegetated Sonoran Desert Bioregion make direct solar energy a more plentiful alternative there.