Is half a sphere called a biosphere?
its called a hemisphere hemi means half and sphere
The half of a sphere is a hemisphere and not a biosphere. Biosphere is the global sum of all ecosystems and also called the zone of life on earth. Visit http://en.wikipedia.org/wiki/Hemisphere for more information.
half a sphere is a hemisphere. A biosphere is (was) a failed attempt to build an enclosed, self sustaining eco-system.