Evolution explains how Earth's present-day species developed from earlier species through A genetic engineering. B mass extinctions. C natural selection. D asexual reproduction.

C.

Explanation:

Natural selection is how animals adapt to places for example how giraffes got long necks for eating plants.

Hope this helps

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.

the rub-al-khali is also known as the arabian desert and the "empty quarter"