Rerange the word

61-70. use the cues given to write correct sentences
61. our rivers/ streams/ seas/ dirtied/ activities on land
62.forest / important economic value/ because /they provide / us/ resources such as timber 
63. forest / vital / the environment / because /they/ clean/ air / we breathe 
64. man/ cut / too many trees/ over the years / and/ we now face up/ problem / deforestation 
65.the forest / still a place / hold/ many / world's most valuable resources