Carbon di Oxide is the metabolic waste excreted out from our body through mouth.
Metabolic waste is made up of substances that the body cannot use for energy. It consists of urine and feces that are excreted, and carbon dioxide, which is exhaled through the nose and mouth.
The metabolic waste products of the body are carried to the kidneys by the blood.
The pathway of metabolic waste from the aorta to the outside of the body of a fetal pig begins in the aorta. The abdominal aorta, renal arteries, and bladder excrete the waste to the outside of the fetal body.
Your lungs wash out the carbon bi oxide. It is a metabolic waste of biological oxidation process.
excretion
Nephridia
It is carbon dioxide, a metabolic waste. But remember, most of it is retain in the body to adjust the pH.
mouth
To remove metabolic waste from the body. The blood and the Urinary system.
Humidity from the lungs carries respiratory waste out the nose and/or mouth during exhalation.
excretion of body waste is important because body cells produce toxic waste which has to be removed from the body .it is important because elimination by an organism of waste products that result from metabolic process.If you do not excrete waste products, your body gets poisoned by all the metabolic toxins. This will cause the kidneys, and other organs, to stop functioning. If it continues, you will die.
either chickens or ducks but idont think we are thinking of the same question