A water use for several ways,Such as water once-used can be used for flushing,water laundered rice can be used to water the plants,the water washed clothes and be used to drag or flushing.
Care for each tree and grass,don't pick any leaves,don't felling trees not in order,plant a variety of flowers and trees,water the trees.
Not littering and spitting casually.
Plant a variety of trees,make the air more fresh.