Put the words in the correct order. rain / animals / Acid / harmful to / is / plants / and fumes / from cars / Toxic / cause / pollution / air The / of / a / habitats / big / is / problem / loss / natural dying / in / species / Many / river / this / are / fish pollutes / Factory / the / soil / waste / often clouds / There / cities / over / are / polluted / big trees / Acid / slowly / rain / kills .