Treesareimportant

　　Treesareveryimportanttous.

　　Firstly,theytakeincarbondioxidefromtheairandmakeoxygen.Peopleandanimalsneedoxygentolive.That'sveryimportant.

　　Secondly,treesareveryuseful.Theyprovideuswithwoodandotherproducts.Manysmallanimalsandinsertsliveinthetrees.Someofthemalsogetfoodfromtrees.

　　Moreover,treescanalsostopwaterandsoilfromgoingaway.Ifwehavealotoftrees,westopdesertsfrombeinglarge.

　　Lastbutnottheleast,treesaregreen.Theycanmakeourcountryevenmorebeautiful.

　　However,inmanypartsofourcountry,peoplehaven'trealizedtheimportanceoftrees.Theycutthemdownatwill.Theyareusuallytoolazyortoocarelesstoplantandlookafternewtrees.Asaresult,theforestscontinuetodisappear.

　　Tosumup,treesareveryimportant.Theyareourgoodfriends.Weshouldplantmoretreesandtakegoodcareofthem.