<prompt> Translate the following text to EnglishKwa mfano, katika hali ya chembe ndogo, mahusiano ya kemikali ya angahewa yanaonyesha kwamba wakati wa kupunguza sulfate tu, kwa mfano, inabadilishwa katika angahewa na nitrati.  <response>: In the case of fine particles, atmospheric chemical relationships suggest that when only reducing sulfate for example, it is replaced in the atmosphere by nitrate. 