Ecology (ecological sciences) is the scientific discipline concerned with the study of the relationships between living organisms, including humans, and their physical environment. It investigates the distribution and abundance of organisms, the structure and function of ecosystems, and the dynamics of populations and communities. This field is fundamental to understanding environmental processes, biodiversity, conservation, and the complex interactions within natural and human-altered systems, providing essential knowledge for addressing challenges such as climate change, resource management, and sustainable development across various scales, from microbial life to global systems.