Final answer:
Waste materials consist of human excreta, garbage, refuse, and industrial waste. They are substances that are no longer useful to an organism and need to be eliminated from the body.
Step-by-step explanation:
Waste materials consist of human excreta, garbage, refuse, and industrial waste. In the context of biology, waste materials refer to substances that are no longer useful to an organism and need to be eliminated from the body. In humans, waste materials include urine, feces, and sweat.
Human excreta, such as urine and feces, contain metabolic waste products that need to be removed to maintain homeostasis in the body. Garbage and refuse are materials that are discarded by humans, often as a result of consumption or manufacturing activities. Industrial waste refers to waste materials produced by industries, such as chemical byproducts or packaging waste.
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