Hello this is my first thread, I have been wanting to ask this question for a bit of time. I need help for revision for my OCR twenty first century science A unit 4 ideas in context exam which will be held on 24/05/12, by any chance are there other people? i was wondering how to revise and would be grateful if a few of you could have some questions in which i can revise with

The link to the resource booklet is here : http://www.ocr.org.uk/download/prm/o...se_u214_rb.pdf

Thanks you in advance !!!