Lungs and skin can also be part of the excretory system due to fact that they both excrete wastes.
Skin secretes excess water and salts
Your lungs help you get rid of waste gases
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Among the choices the answer letter C which is "<span>the left and right sides"</span>
They include the kidneys, large intestine, liver, skin, andlungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes theureters, bladder, and urethra.
Carbon and nitrogen and an important element of living things. Nitrogen is a major component of DNA and amino acids while carbon can be found in almost all biomolecules. These elements, therefore, need to be renewed and recycled as they are utilized by ecosystems that is ever dynamic.