CHNI Public Health Nursing (PHN) Board Exam 2025 – 400 Free Practice Questions to Pass the Exam

The term that best describes the relationship of organisms with their environment is ecology. Ecology is the branch of biology that studies the interactions between organisms and their physical surroundings, including other living organisms. It encompasses a wide range of relationships, such as how species interact with one another and how they relate to their habitats and the abiotic factors present in their environment, such as climate and geography.

By understanding ecological principles, public health nurses can appreciate how environmental factors influence health outcomes in different populations. For instance, assessing how urban design affects community health or how environmental pollutants impact certain species can provide valuable insights into preventive health measures and community interventions.

This understanding is rooted deeply in the way organisms adapt to their environments and the ecological balance necessary for sustainability and health. Other terms like ethnology, which focuses on cultures and relationships among human societies, or etiology, which relates to the cause of diseases, do not capture the direct relationship between organisms and their environments in the same holistic way that ecology does. An ecosystem, while closely related, refers more specifically to a community of living organisms interacting with their physical environment, which is a component of ecological study but not the overarching concept of the relationship itself.