Inhalation of these can cause diseases such as silicosis and black lung.
Their ability to absorb and scatter solar radiation is measured by their SSA. Black carbon has an SSA of 0.23, indicating that it very absorbing. According to the IPCC, it is difficult to model the effect of these on global warming, because of uncertainties regarding their atmospheric burden, anthropogenic contribution, and their optical parameters. Inhalation of these can cause diseases such as silicosis and black lung. They are a major source of pollution in industrial cities such as Mexico City and Beijing. Examples of these include (*) smoke, dust, and smog. They differ from sols in that the continuous medium is always a gas, usually air. For 10 points, give this term which in common usage can also refer to a spray can capable of dispensing it. 
Their ability to absorb and scatter solar radiation is measured by their SSA.
{aerosols} [accept {particulate matter} before spray can is read]