Which term describes the suspension of small particles from combustion that negatively impacts visibility?

The term that describes the suspension of small particles from combustion that negatively impacts visibility is 'smoke.' Smoke is composed of a mixture of solid particles, liquid droplets, and gases released during the incomplete combustion of organic matter, fossil fuels, or other materials. When these fine particles are suspended in the air, they can significantly reduce visibility, especially in urban areas or near fires.

While haze is also an atmospheric condition that can affect visibility, it is primarily caused by the scattering of light by dry particles or pollutants that are not specifically derived from combustion. Fog, on the other hand, is composed of water droplets suspended in the air and typically occurs when moisture in the air condenses. Clouds represent larger collections of water droplets or ice crystals at higher altitudes and are not directly associated with visibility issues caused by combustion particles. Thus, smoke is the most accurate term for characterizing the impact of small particles from combustion on visibility.