People with a physiological dependence on a substance, such as an addictive drug, will experience

Match each disease with the body system it affects

Teenagers and children need sleep. teens need at-least 8-9 hours of sleep. kids need   at-least 10-11 hours of sleep depending on what time they go to sleep. sleep is very important for anyone of any age. read more on -

3reasons on how do friendship affect a teenager?