Environmental conditions (e.g., light, nutrients) that restrict the growth, abundance, or distribution of an organism.

Relating to freshwater lakes or ponds.

A scientist who studies the physical, chemical, and biological aspects of freshwater ecosystems.

The study of inland waters (lakes, rivers, wetlands) and their biological, chemical, and physical properties.

A simplified representation of a molecule’s structure using lines to denote bonds between atoms.

A spectrum of discrete wavelengths emitted or absorbed by atoms or molecules, characteristic of specific elements.

A sequence of species or populations descended from a common ancestor over evolutionary time.

In anatomy, visible ridges or marks on bones or tissues, often indicating attachment sites or growth patterns.

Relating to the tongue or the surface of a tooth facing the tongue.

Tongue-shaped.