<prompt> Translate the following text to EnglishHata hivyo, kuna wasiwasi wa kudumu na kuongezeka kuhusu urejesho wa mifumo ya ikolojia na hatari ambazo uchafuzi wa hewa unaweka kwa afya ya binadamu.  <response>: However, there are persistent and growing concerns regarding recovery of ecosystems and the risks that air pollution pose to human health. 