The political system helped to end the de-jure segregation as, it is occurred in the matter of the circumstances and on the law bases. It is basically referred as the legal separation in the society and the civil rights act are also contributed in the ending of the de jure segregation. The de facto segregation are not legally separated but it is distributed with each other.
Photosynthesis and chemosynthesis are both processes by which organisms produce food; photosynthesis is powered by sunlight while chemosynthesis runs on chemical energy. ... Ecosystems depend upon the ability of some organisms to convert inorganic compounds into food that other organisms can then exploit (or eat!).