Define push and pull factors in migration. then give an example of both.

Explanation:

Push factors: Push factors are those factors that force an individual to leave a place. If not left the individual will have to risk something. some examples of push factors are Famine, drought, conflict or extreme religious activity.

Pull factors: pull factors are those factors that attract an individual or group to leave their home. It is the desirability of a place that attracts, also, called place utility. Better job opportunity, Better Economic activity and better living standards are are some factors in pull factor.

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.