Pollution Scramble

Unscramble the words below. These words all have some relation to pollution. I hope you have fun, and remember try your best.

HTASR
CPSALTI GSNIR
STNE
GRHTSLIE
LOI
HOGST STNE
BMCSO
HBRUS
TXIOC FMEUS
ASE BRDIS

ANSWER