The change in the curvature of the lens that enables the eye to focus on objects at various distances is called

the members of alcoholic anonymous aren't required to disclose their last names.

delegated (sometimes called enumerated or expressed) powers are specifically granted to the federal government in article i, section 8 of the constitution. this includes the power to coin money, to regulate commerce, to declare war, to raise and maintain armed forces, and to establish a post office.