Low-carbon life is good for everyone. To help with the environment, I always walk or ride a bike to school instead of taking a car. Besides, I will try to use things that can be recycled and I never forget to turn off the lights when I leave the classroom. I think it's my duty to live a low-carbon life. And even the simplest activities can make a real difference to the environment. So I suggest we should reuse books as long as possible. And we'd better not spend much money on expensive clothes. If everyone does something for the environment, I believe the earth will be a better place.