Once nominated by the president, cabinet appointees (such as the secretary of defense) must be and can be

The answer is: Confirmed by the senate; fired without the senate's approval.

The purpose of the confirmation is to give enough time for the senate to do a background check on the cabinet appointees and decide whether to vote for their appointment or not. If after the background check the senate found something wrong with the appointees, the senate can fire the appointees through voting.

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.

a they donate money to humanitarian causes

c   they volunteer to alleviate suffering

d   they blame all muslims for not being able to keep their fellow muslims in line.