for superior r-value • thermally-broken to eliminate thermal convection • gasket seal between sections provide for an extremely tight weatherseal • concealed steel back-up plates run from top to bottom of each section for secure hardware attachment • bottom "u" type astragal is a standard feature •...
, and then some days later deposit those seeds somewhere else. the plant species that do this not only tend to thrive in greater numbers, and over more territory, but they also enlarge their breeding network and thus evolve faster. what did land plants do before amphibians evolved about -mya (million...