Wherever you are studying, you shouldn't be asking us about layout etc - this should all be available through your tutor and/or student support.
You need to know what references to supply and in what format you should list them at the end - different educational establishments have very different rulings about referencing.
My first thought is - if tobacco were banned, it would go underground onto the black market - and indeed whether such a ban is feasible, since tobacco brings a huge amount to the UK economy in taxes.