This is a compilation of information I have put together from various sources to help HSC Geography students with their studies in the unit of work called Ecosystems at Risk. This is now over 12 years old and a new Syllabus has come out. This was structured based on the Stage 6 Geography Syllabus that was in place from 2001-2022. Withthe new syllabus you will have to pick and choose what is relavant. I am slowly trying to go through and reference the material wherever I can remember as I rushed to put these together for my students over 10 years ago. If you know where I got some of this stuff from please email me at admin@mrstevennewman.com so I can attribute it.