PLEASE HELP 3. This component of Earth's physical systems is the region on Earth that can sustain life.
O the lithosphere
O the biosphere
O the atmosphere
O the hydrosphere

answer; (d) melting of sea ice;

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.