Salmon carcass analogues represent an inanimate nutrient treatment while spawning salmon represent an ecologically important source of bioturbation, physically disrupting the streambed and providing direct sources of metabolic waste products through excretion (Chaloner et al., 2004; Moore, Schindler & Scheuerell, 2004).
Another set of organs involved in metabolism and metabolic waste are the Malpighian tubules.
Oviparous fishes and amphibians develop in an aquatic environment, and exchange of oxygen and carbon dioxide and elimination of metabolic wastes occur through the egg membranes.
Metabolic waste is voided from the bladders through a pair of openings near the front of the upper part of the mantle cavity, from where it joins the stream of exhalant water.
During pregnancy, nutrition and other endogenous chemical compounds are supplied to the fetus via the placenta, and metabolic waste products and xenobiotics are excreted into the maternal blood through the placenta.
Tears are produced by the lachrymal and meibomian glands and contain all manner of chemicals, including proteins, enzymes and metabolic waste products.
Fitness usually refers to a person's aerobic capacity -- the ability of the heart, lungs and circulatory system to supply oxygen-rich blood to muscles and organs and remove metabolic waste products during physical exertion.
"Sensory deprivation stimulates theta brain waves, promoting mental clarity, and sea salts pull metabolic waste out of your pores".
Typical sources include human and animal metabolic waste and domestic and industrial food processing waste.
The kidney performs essential physiological jobs ranging from metabolic waste excretion to homeostatic functions like osmoregulation.
