Approximately 62.8 million americans, of the adult population — volunteer their time, talents, and energy to making a difference.

25%

Explanation:

Based on the information provided within the question it can be said that the approximate 62.8 million Americans account for roughly Twenty-Five percent of the adult population. Meaning that the entire adult population would sum up to be roughly 251.2 million individuals within the United States of America. Which only 25% volunteer their time, talents, and energy to making a difference.

answer; ///( no)   they would be tried separate,criminal cases would be tried first, then the civil case;

radiant energy is a form of kinetic energy only.(a)