refers to microscopic bubbles of gaseousoxygen (O2) that are mixed in water and available to aquatic organisms for respiration—a critical process for almost all organisms. Primary sources of DO include the atmosphere and aquatic plants
is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality.
the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
sodium nitrate, potassium nitrate, or ammonium nitrate, used as fertilizer
an organism whose status in an ecosystem is analyzed as an indication of the ecosystem's heath.