We are all living on the earth,so we should try our best to protect our living conditions.But some people are doing something bad to our own possessions,such as throw paper everywhere,waste the water,what is more ,some are destory the possessions.In order to protect our earth,we must take some steps to prevent it.In my opinion,there is nothing important than to identify our environment. We are all living on the earth,so we should try our best to protect our living conditions.But some people are doing something bad to our own possessions,such as throw paper everywhere,waste the water,what is more ,some are destory the possessions.In order to protect our earth,we must take some steps to prevent it.In my opinion,there is nothing important than to identify our environment.