Unit 4: The Changing Earth: The Cause and Impact of Earth HazardsEach book in the Surfing series contains a summary, with occasional more detailed sections, of all the mandatory parts of the syllabus, along with questions and answers.All types of questions - multiple choice, short response, structured response and free response - are provided. Questions are written in exam style so that you will become familiar with the concepts of the topic and answering questions in the required way. Answers to all questions are included.A topic test at the end of the book contains an extensive set of summary questions. These cover every aspect of the topic, and are useful for revision and exam practice.