Final answer:
Waste incineration poses environmental risks due to hazardous emissions and toxic ash.
Explanation:
A potential environmental issue with waste incineration is hazardous emissions. Incineration releases various air pollutants and toxins like dioxins, heavy metals, sulfur dioxide, and nitrogen oxides into the atmosphere, affecting air quality. The byproduct of incineration, ash, can also be toxic, posing risks to the environment and human health.
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