Do you know something about communication technologies? - yes, i know about communication technologies. - what communication technologies do you know? - i know telephone, computers and etc. - do you use communication technologies? - yes i use it. - what do you know about communication technologies? - i can have any information thanks communication technologies. - do you have friend who use communication technologies? - yes i have many friends who use communication technologies like computer and telephone.
Air pollution problems have become one of the problems of the modern world. More and more people are suffering from water and air pollution. Likewise, the nature suffers from air pollution. The reasons for such a lot of environmental problems, such as: increasing the number of cars on the roads, factories, waste, millions of felled trees, the animal life, polluted rivers and seas. Fortunately, there are plenty of opportunities to stop these problems. If everything will take care of the planet and does not pollute the nature and many problems can be solved.
