When did the everglades become a national park

With the support of many early conservationists, scientists, and other advocates, Everglades National Park was established in 1947 to conserve the natural landscape and prevent further degradation of its land, plants, and animals.

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.