资料题：What kind of law helps to save fuel（　）。

What kind of environment do you want in the future? What can you do to help make it happen? What can other people do?Education is a way to help the environment.You can learn about the environment in school.Radio and TV can give you information.Newspapers, magazines, and books also help you learn.Laws can also help the environment.There are laws against littering and against making the air and water dirty.Other laws help people to save resources.The law lowering the speed limit for cars helps to save fuel.But people don't have to wait for laws to be passed.They can do things on their own.They can protest against products that hurt the environment.Another way to help the environment is to plan for the future.We may have to find new resources.In the future, people may heat their homes with atomic power.Maybe they will use energy from the sun.Without planing, some kinds of environment may not happen.People can act now to help make the future.