I think you tube has made use of technology in an efficient manner and has made it possible to sustain in the market for a longer run.
Sustainable is ways of living and doing buisiness that use natural resources without using them all up. So one of what we can do for the sustainable development is to use eco fashion products like...
if we weren't we would run out of basic things we need for living like food, oxygen and fuel
go back to skoolgo back to skoolfish is consider sustainable
the definition of sustainable is having a lot of pride and passion