写一篇《how to protect our environmrnt》英语作文

写一篇《how to protect our environmrnt》英语作文
单词简单些的,要80字左右嗯,我们期中考试英语作文就是这个范围来考的我背一下就行了另外,再帮我写一篇《our earth is in danger》的英语作文单次尽量简单些!谢谢  

how to protect our environmrnt
As a modern school students. We all know environment is very important in our daily life.
but,do you know how to proctect environment?
first,we should keep our school yard clean and tidy . second,we shouldn't drop the litter here or there. Third,we should go to school by bike or on foot. Fourth,we should turn off the lights and tv when we leave home. Fifth,we shouldn't spit in public . On the one hand we shouldn't cut down trees without permission. On the other hand we should plant trees in spring as many as possible.
If we try our best ,i'm sure our envionment can get better and better!
our earth is in danger
We have only one earth.But now our home is in danger,we should do our best to protect.
Firstly, the land is damaged mostly by deforestation, (which is the cutting down of trees.) Overgrazing by cattle and livestock, especially on lands with few or little rain coupled with strong winds, is one of the factors that will result in more arid landscapes.
Secondly. the air is polluted by emissions like smoke and other pollutants from factories, power stations, and vehicles like cars. Especially in the industrial areas, these are harmful to human health and to the atmosphere.
Lastly, waste discharge from factories and cities into waters directly without being treated first, is a major source of water pollution.