The complex of physical, chemical, and biotic factors that act upon an organism or an ecological community and ultimately determine its form and survival.

A scientific discipline, such as Sociology, Anthropology, or Psychology, in which the actions and reactions of humans and animals are studied through observational and experimental methods

Soundness, especially of body or mind; freedom from disease or abnormality and the science of diagnosing, treating, or preventing disease and other damage to the body or mind.

Life and its functions, including Anatomy & Physiology, Botany, Zoology, Ecology/Bionomics, Evolution and Extinction.

The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems.

This forum is dedicated to that involves the study of matter and its motion and behavior through space and time, along with related concepts such as energy and force.

The study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols.