Is it necessary to submitt Xerox copies when an application is submitted?

It is found that Xerox business is booming, it is fine some small businessmens are earning their lively hood. If we observe the purpose of taking xerox copies we may find that every day tons of xerox copies are becomming waste. I am mentioning one simple example. student applying for college studies has to take xerox copies of various certificates such as 10th pass marks card, birth certificate, NCC certificate or scout certificate, sports certificates etc, this is for one college like wise student has to apply for various colleges. if 5 xerox copies are used for 1 college for 5 colleges 25 xerox copies. student gets admission only in one college thus remaining 20 xerox copies are national waste. I feel that to stop such waste any of such ads for college or any other, they must mention that no xerox copy is to be attached all the data asked only must be filled in the application by applicants own hand writing. They may collect xerox copies if application is selected. this reduces waste