This book looks at two topics in environmental science: Landforms looks at the physical features of the Earth's land surface, where they occur, how they form and how they change. The development and evolution of landforms involves processes in the solid Earth (the geosphere), the atmosphere, the hydrosphere and the biosphere, which all interact with each other. The topic goes on to look in more detail at the processes which act to modify the geosphere. Cycles considers the Earth as a whole, looking at the connections between the geosphere, the atmosphere, the hydrosphere and the biosphere, and how elements move between them. It examines the rock cycle, the biogeochemical cycle, the carbon cycle, the nitrogen cycle, and the sulphur and phosphorous cycles. Throughout the book there are questions and activities for the reader to engage with. Answers and explanations are provided at the end of each section.