Of or relating to hydrology

The study of the Earth’s water cycle, including, for example, marine, fresh, and brackish water, glaciers, and atmospheric water. The term is commonly associated specifically with the study of freshwater at or below the surface of land.

The loss of an organism’s native environment.

An organism’s native environment.

A proposed explanation for a fairly narrow set of phenomena, usually based on prior experience, scientific background knowledge, preliminary observations, and logic.