How is the population distribution of canada and australia similar? how is it different?

Canada and Australia are both small countries. Australia has a population of 20 million, compared to approximately 30 million in Canada. Second, the two countries have similar economic structures.

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.