Write an article in about 150-200 words about man's effects on environment.
hints:
man's actions to deplete it.
how it is polluted?
effects.
methods to save it.

I would like to tell you about the main ecological problems in our life. They are: littering, air pollution, water pollution, endangered species, destruction of natural resources and others.
People cut down forests, pollute air and water.
Water is the liquid of life. Man consists of 70% of water, so using water is necessary to sustain our lives. Earth is a "blue planet", but actually,  the amount of fresh water suitable for drinking, is very limited because of the detrimental impact of human activities. 
Therefore, the problem of drinking water is urgent nowadays.  The main source of pollution is agriculture, industry and household waste, as well as pathogens. Besides, the water absorbs harmful to human health impurities - rust, heavy metals, chlorine in the pipes through which the water enters our apartments.
What can we do? How to make our water clean, how to save it?
We must turn to our government, scientists, all people to call them to do the best for the prevention of pollution of water! Adults must better dispose waste of human life, build treatment facilities.  
And of course, we have to save drinking water, not to let it just flow  into  nowhere. It can be done even by a child. Teach him to close the faucet with drinking water when it is not needed. 
Nowadays we don't think about our future and about future of our planet. There many endangered species in the world. We just destroy our nature. It is very bad and we mustn't do it. We must care of our beautiful nature. We must begin from our houses, streets and towns and make them clean. People must not cut down forests, pollute air and water. We must stop killing endangered  animals. 
Only together we will save our planet and live on it happily. 

(Sorry, I'm Russian, maybe there are some mistakes in my answer, not be angry with me)