Welsh Language Edition. The Revision Workbook provides a comprehensive collection of examination-style questions covering each topic from the WJEC Biology for AS Level specification. // Ideal for examination preparation, exam question practice and for improving examination technique. // Enables students to build on their knowledge of key areas of study and develop their confidence in the subject. // Helps students understand what is required in an exam and develop the skills needed to be effective in an exam situation. // Includes advice on how students can refine their exam technique and improve their grade potential. // The helpful write-in format, together with the answers, enables students to check their progress as they work through the course.