"Ecological" refers to the relationships between living organisms and their environment. It encompasses the study of ecosystems, which include plants, animals, and microorganisms, as well as the physical surroundings like soil, water, and climate. Understanding these interactions helps scientists assess the health of ecosystems and the impact of human activities. Ecological principles are essential for conservation efforts and sustainable practices. For example, biodiversity plays a crucial role in maintaining ecosystem stability, while pollution can disrupt these natural processes. By studying ecological systems, we can develop strategies to protect the environment and promote a balanced coexistence between humans and nature.