Acknowledgements

Except for third party materials and otherwise stated (see terms and conditions [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] ), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Course image: deeuutee in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.

Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:

Figure 1c: Copyright © GeoScience Features Picture Library;

Figure 1a: NOAA;

Figure 2: NASA;

Figure 5: copyright © Tom Payne/Alamy;

Figures 7, 8b, 18c, 19c, 20b, 21b, 22b: Courtesy of Ruth Williams;

Figure 9: Courtesy of Linda Fowler;

Figure 11: Courtesy of Dr Elaine McPherson.

All other materials included in this course are derived from content originated at the Open University.

Every effort has been made to contact copyright owners. If any have been inadvertently overlooked, the publishers will be pleased to make the necessary arrangements at the first opportunity.

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