I don't care if it's a dog eat eat dog world, not helping people because you don't want them to get a couple of extra marks that may make the grade boundaries higher so you have a the smallest bit extra chance of fitting into a higher grade? sounds a bit selfish to me..
So what if it makes the grade boundaries what ,like one mark higher, most likely you will have gained more than one mark just from reading this thread in the first place.
If a college doing wjec bio suddenly gained a better teacher who's amazing at biology that's going to do more damage than this thread is. No point thinking about the damage this thread can do, better to think what you can gain from it instead.