Hey, can you guys please help me please??

Aletter or menu command that starts an action when the user presses the designated letter and the alt key together is called what?

What are procedures that keep a data base current

Suppose an astronomer discovers a large, spherical-shaped body orbiting the sun. the body is composed mostly of rock, and there are no other bodies sharing its orbit. what is the best way to categorize this body? a. planet b. moon c. comet d. asteroid