Which part of earth encompasses all areas where organisms can obtain the energy they need, including the organisms as well? hydrosphere biosphere lithosphere atmosphere

The best answer is the biosphere: the biosphere includes all the living organisms and all the organic material from the dead animals.

In comparison, there are parts of hydrosphere, lithosphere and atmosphere without any organic material, the material that can be used as energy source. 

Ba population changes in response to a change in environment