Which of the following helps shield the global population from exposure to essentially all high-energy, bombarding cosmic rays?

A patient exhibits swelling and deformity to the wrist. After splinting, which one of the following positions of the hand is MOST appropriate?

A) Hand in a fist with thumb inside fist B) Fingers curled inward C) Wrist flexed with fingers extended D) Fingers extended and spread

Why does radiation therapy work to cure cancer?

What will be an ideal response?