<prompt> Translate the following text to EnglishSulfate ni muhimu katika maeneo yote ya Marekani, hasa katika Mashariki, ambapo unyevu wa juu huongeza ufanisi wa kuzima mwanga wa sulfate.  <response>: Sulfates are a key factor in all areas of the United States, particularly in the East, where high humidity increases the light extinction efficiency of sulfates. 