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Cataracts and skin cancers are serious problems resulting from ozone depletion, along with another serious threat, the UV radiation destroying ____________________.
Urea
A nitrogenous compound produced in the liver as a waste product of protein metabolism.
Uric Acid
A waste product formed from the breakdown of purines, which are found in many foods, and is excreted in urine.
Nephridial Organs
Excretory organs found in many invertebrates, functioning similarly to kidneys in removing metabolic wastes from the organism’s body.
Metanephridia
Excretory organs in many invertebrates, such as annelids, that filter body fluid directly from the coelom.
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