Which Has no atmosphere

Earth

Sun

Moon

Im pretty sure they all have an atmosphere but I could be wrong. I think the answer is moon

Explanation:

answer; (b); i believe its indefinite existence of human population in a healthy and prosperous condition;

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.