What things can we do at school to protect the Earth?

保護地球的行動在學校，急急急急急急急急！

(你自己譯返英文啦)
1. 唔好亂拋垃圾 例如將飲料瓶放在地上
2. 唔好浪費水 即係唔好玩水之類
3. 盡量食曬午餐 如果全日課的學校
4. 如果仲有少少位嘅廢紙可以用嚟做算草紙
5. 盡量用環保袋， 唔用膠袋
6. 可以喺學校種植植物 如果老師批准
7. 唔好用即棄餐具， 最好自備餐具
8. 如果有回收箱就將可回收嘅東西放入去回收箱 寫住咁多先啦， 希望對你有用

In my opinion, in order to protect our earth, it is necessary to do something worthwhile; when we are studying every day in the school: Firstly, trying to use computer to take notes and writing report, or etc. Secondly, trying to prepare our own lunch prior to school. Thirdly, trying walking or use bicycle to school instead of by bus or vehicles. Fourthly, trying to open the window when the air temperature being suitable or comfortable. Yip