<p>This updated edition addresses the examined units of the CCEA AS level Life and Health Sciences specification (including the recently-proposed revisions). It covers both the Single and Double Award courses, through the study of the following units:<br/><br/>¿ AS 2: Human Body Systems<br/>¿ AS 3: Aspects of Physical Chemistry in Industrial Processes<br/>¿ AS 5: Material Science<br/><br/>The full-colour, illustrated chapters clearly explain the theory for the course, and are supported by worked examples, tips, examination-style questions and answers.<br/><br/>The authors are all experienced science teachers and examiners and the book has been through a meticulous quality assurance process prior to publication.</p><p><strong>Contents:</strong></p><div>Unit AS 2: Human Body Systems<br/>1 Cardiovascular System<br/>2 Respiratory System <br/>3 Respiration<br/>4 H