Covers all the subject content for the assessment of units 1 and 2 in a series of double-page spreads that follow the order given in the specification; consists of the following box list of prior knowledge, namely: 1) a list of objectives which relate directly to the AQA specification 2) text covering the subject content, with key terms shown in bold print and 3) answers to all questions will be found in the e-book and the teachers restorer.