Conservation starts off by looking at conservation, ecology, and science and describing how they relate to each other. It then examines populations and how they may change in relationship to movement and the size of suitable habitat available, covering also processes that lead to extinction. Other topics include interactions among different species and the processes through which ecological communities are created. Ecosystems are treated next with a look at their relationship to human wellbeing. Finally, the text examines different human attitudes towards nature, including those of indigenous people, and different conservation strategies.