If the recurrence interval for a stream flood has been established at 100 years and the stream flooded last year, what is the probability of the stream flooding again this year?

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.