i want you correct my writing.
the increasing number of skyscrapers in cities leaves a lot of effects. the obvious impact of it can be seen on environment. Skyscrapers is really environmental friendliness. On one hand, it help save energy thank to using rain water on heating and ventilation system. the heat was produced by room use to boil water for daily life. on other hand, it reduce smog and waste to the air because of recycling center. Recycling center is instructed in skyscrapers permit habitant recycle garbage easily. The place hold rubbish is set on skyscrapers permit not to transport many times, so amount of gas and energy use less than normal. Another effect is attractive to investors because they like to put money on an asset rather than asset. the more asset, the larger cost of management. Take advantage of limited land fund is the last effect of skyscrapers. In comparision with conventional instructors which hold 3 or 4 person, skyscrapers can hold a huge amount of people. It help meet the demand of overpopulation in the big cities because of immigration.