18 on the one i have allready done and failed,i know i could not believe it too, obviously i have no common sense lol,i did this one on the same night as working relationships and in that i was only one to get 100%,was gutted as i thought the environment exam was gona be the easiest, a few of the lads said it was a tricky exam, i cant even think of the questions i had,but i did guess at a few obviously the wrong answer was given lol, only got this and central heating left and the GOLA, but i a little concerned with this enviro one at the min, the central heating i feel confident and have some good notes to help me get through it i hope,.... cheers m8, good luck..........