Want to save the earth？ Plant a tree!

    What's causing global（全球的） warming？ Is it man﹣made？ Or are temperatures simply changing naturally？ Whatever the case， we can at least try to slow things down． But how？

    The Wilderness Project has an idea ，（1）　　．If the earth has more trees， greenhouse gases will be reduced， and this will help stop global warming． （2）　　and improve air quality （质量）．

    （3）　　．In Belgium， the Organization for Forests worked with farmers to help them plant more trees． In Spain， the Canopy Project plants one tree for every Spaniard（西班牙人） in order to improve the environment． In Germany， a teenager named Felix Finkbeiner has been leading a global movement to plant more trees． （4）　　．

    Now， lots of people all over the world have already been planting more trees． In fact， if everyone plants one tree， just one， it will do great good to our environment．

    So what can you do to help？ （5）　　 ，although you need to get advice on how to look after it． Or you can join a tree planting project such as the ones mentioned above to help save the earth．

    So， go on， plant a tree.. and save the earth!

A． Maybe you can buy a young tree to grow B． They suggest that we should plant more trees C． Another question is how quickly the sea level will rise D． Many countries are calling on people to plant more trees E． What's more， they improve human health by producing oxygen（氧气） F． He was nine when he came up with the idea of planting trees around the world