In the airline industry elevation = height above ground and altitude = height above sea level. Altitude is used to calculate air pressure, elevation is used to make sure you don't crash into mountains.
Marijuana is a dangerous and addictive drug that has many consequences to using it. People debate whether it should be legalized or not due to its pros and cons. Marijuana should not be legalized because it is a gateway drug to the legalization of other drugs and has many bad effects on the users of it.
Marijuana is an addictive, gateway drug. It significantly impairs bodily and mental functions, and its use is related to increased violence. These are facts. Yet proponents of legalizing the drug studiously deny or downplay the well-documented dark side of marijuana trafficking and use.