i had a nice dream yesterday.it tells me a reason.

     i dream that i can fly in the sky.i looked down at the ground.every thing is very beautiful.the blue sea, the green grass,the fresh aira and the worm breeze. every thing feld good. the birds sang happyly,the fish played free,the rivers ran quickly.every thing is full of life.

    suddenly,i fell down,when i woke up every thing have changed.the trees became yellow and the leaves fell down.the bird sang saddly,the river became dirty and the fish died.i was surprised and bewildered i said:" ohh,why did the world without any vitality!!"i cried saddly and loudly.then i heard a vioce from sky:"do you want the world   
become as beautiful as before, first you must protect the enviroment!"

    then i woke up i think about the dream:we must protect the enviroment otherwise the world will become without  vitality at all.