Ecology is the branch of biology that deals with the relationships between organisms and their environment. It explores how living organisms interact with each other and with the non-living components of their surroundings, including air, water, and soil. Ecologists study different levels of organization, such as individuals, populations, communities, ecosystems, and the biosphere. Understanding ecology is essential for conserving biodiversity, managing natural resources, and addressing environmental challenges such as climate change and habitat destruction.