Urban heat islands can cause an increase in pollution, which is very harmful to people’s health.

The answer to this question is air pollution.

Ithink its convection.hope this plz give brainliest!

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion