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Editor: Caitriona Clarke Design and layout: Sarah McCoy Illustrations: Oliver Averill, Derry Dillon, Brian Fitzgerald
At the time of going to press, all web addresses were active and contained information relevant to the topics in this book. Gill Education does not, however, accept responsibility for the content or views contained on these websites. Content, views and addresses may change beyond the publisher or authors’ control. Students should always be supervised when reviewing websites.
The paper used in this book is made from the wood pulp of managed forests. For every tree felled, at least one tree is planted, thereby renewing natural resources.
