1/ Light pollution makes us unable to see the stars in the sky.
2/ Contamination in the air causes acid rain in the region.
3/ Because of noise pollution, people suffer from stress and anxiety.
4/ Households dump waste into the river, so it is polluted.
( Cho mình ctlhn nha >< )
#Chúc_cậu_học_tốt !!
~ Never give up ~