John, who is sixteen years old, is four times as old as his brother. how old will john be when he is twice as old as his brother?

Which was an effect of the establishment of the european union

Drugs have a high potential for abuse. there is no routine therapeutic use for these drugs and they are not available for regular use. they may be obtained for “investigational use only” by applying to the u.s. drug enforcement agency. examples include heroin and lsd. which scheduled drug is this?

If we can't separate our civilized self from our savage self which will take over and why