Answer:
Metabolic wastes or excretements are substances left over from metabolic processes (such as cellular respiration) which cannot be used by the organism (they are surplus or toxic), and must therefore be excreted.
This is what i found out i hope this is a good enough answer!! :P
Answer:
D. Wastes produced by life activities.
Explanation:
Metabolic wastes are produced by life activities. Some of these activities, known as metabolism, include breathing and digesting food. Wastes include carbon dioxide, water, urea, uric acid, ammonia, mineral salts, and ketone bodies. The specific salts are sodium, chloride, and potassium ions.
