yes it's fine he's just greening... OR he could have smoked something that secretly wasn't weed, and his body isn't agreeing with it. get help man he could die. seriously, it'll be on your hands. you'll go to jail for this. RUN! get somewhere safe, maybe an out of town friend's place, leave the city, head for Zimbabwe, they'll never find you there.
That depends on how long ago you smoked it.
No, sorry
3wks
Yes It Can
Marijuana is sometimes smoked with tobacco.
If you did not smoke any marijuana, and you have since washed your hair, you will have no marijuana in or on any of the strains of hair on your head, and it will not show up on any drug tests.
Sometimes, phenylcyclohexylpiperidine (PCP or angeldust) is smoked in combination with marijuana. PCP is a very strong and potentially dangerous hallucinogen.
Yes.
EtOH is drunk, and marijuana is smoked. Sometimes marijuana is eaten.
no. Marijuana can be smoked as plentiful as possible, it does not affect your heart, only your brain.
no
There needs to be at least 50 ng/ml for marijuana to show up on a drugtest. I severely doubt that the process in question even comes anywhere near that.