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.
Many states would like to legalize marijuana usage because, like cigarettes and alcohol, they can receive a lot of tax revenue from the sale of the marijuana. Like alcohol and cigarettes, the states can place hefty taxes on the sale of marijuana which would generate a lot of revenue for the government.