Designed to match the revised syllabuses and exam tiers, this science series for Key Stage 4 offers a choice of Foundation-level books for average and lower-ability students, and Higher-level material which covers the content for both tiers. With regard to the latter, material required only for the Higher tier is indicated in the books, to enable teachers to select the appropriate content for their students. Questions are provided to help with revision, and exam practice is included in each assessment and resource pack, which also contains activities with differentiated worksheets. This is the student biology book for the Higher tier. A corresponding assessment and resource pack is also available.