Ecology, the study of interactions between living organisms and their environment, has several synonyms that can be used interchangeably. One of these synonyms is environmental science, which focuses on understanding the natural systems that make up the environment. Another synonym is conservation biology, which concerns the protection and preservation of biodiversity and natural resources. Additionally, environmentalism is an ideology that advocates for environmental protection and sustainable development. Ecology is also related to the study of ecosystems, the study of the dynamic interactions between biotic (living) and abiotic (non-living) components of the environment. In summary, ecology has several synonyms, including environmental science, conservation biology, environmentalism, and ecosystem science.