Ecology is the study of the relationships between living organisms, including humans, and their physical environment; it seeks to understand the vital connections between plants and animals and the world around them. Ecology also provides information about the benefits of ecosystems and how we can use Earth’s resources in ways that leave the environment healthy for future generations. The many specialties within ecology provide us with information to better understand the world around us. This information also can help us improve our environment, manage our natural resources, and protect human health.