How does spatial analysis with historical research
a. it explains how farmers made best use of the land
b. it shows how firefighters fight fire
c. it gives us understanding of how and why certain parts of the country developed the way they did
d. it describes irrigation

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.