Human geography is the study of . A. Human societies and culture

B. Mapmaking

C. Ancient cultures and how they have evolved over time

D. Earth's natural features and how they have changed over time

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.