Question

Design an ad for selling oxygen in future because of excess amount of air pollution and increasing population

Answer 1

I'm imaging and ad with a clear blue sky and white clouds with the slogan, "Breathe Easy." Optional: Create some kind of oxygen tank design - I'm picturing something that's like in a glass container the size of a water bottle to put at the center and create a name for the product. Look at ads for cleaning products to give you a better idea.