When drug addicts stop using a drug they may experience withdrawal because?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems