This is a clear diagram titled "Environmental Archaeology in Archaeology," which primarily explains the definition, methods and techniques, and applications and case studies. Each content is further elaborated on several levels. The definition of environmental archaeology includes the study of ancient environments, climates, and ecosystems. The methods and techniques used involve pollen analysis, isotopic analysis, and remote sensing technology. Through these methods, environmental archaeology reveals the impact of human activities on the environment as well as the feedback effects of environmental changes on societal development. The applications and case studies section showcases the practical use of environmental archaeology in specific projects, such as the reconstruction of ancient agricultural practices and the impact of climate change on social structures.