The method of heat transfer by which the sun warms the earth is
a) conduction
eliminate
b) convection
c) radiation
d) solaration

answer; i do believe its (b) 12.5 years of age;

answer; i believe the correct answer is (117);

the secretary of defense is the principal defense policy advisor to the president. under the direction of the president, the secretary exercises authority, direction, and control over the department of defense.

as you did not provide any choices for me to choose from to give you a direct answer, this is the only information i can provide.