<prompt> Translate the following text to EnglishSO2 na NOx huchangia viwango vya sulfate na nitrate katika anga, na kusababisha udhaifu wa maono, ikiwa ni pamoja na udhaifu katika mbuga nyingi za kitaifa na maeneo ya jangwa.  <response>: SO2 and NOx emissions contribute to atmospheric sulfate and nitrate concentrations that cause visibility impairment, including impairment in many national parks and wilderness areas. 