They used to sell milk in plastic bags
yes
Whatever project you want to do with that.
No, they come in cartons and plastic jugs, at least at the superstore.
Milk carton
we can destroy plastic bags by recycling.
Yes it is made from plastic and can be recycled
Plastic shipping bags are still being made. Biodegradable plastic and degradable plastic bags are much friendlier to the environment than just regular plastic bags.
Plastic bags can support more weight but paper bags can support more items
Glass bottles break, and then you've got milk all over and broken glass to deal with.A plastic bag weighs less (cheaper to transport), is less likely to break, and even if it does then there's just the milk and a piece of harmless soft plastic.Now: the question of "why plastic bags instead of plastic bottles" is most likely because you live in America's Hat, Canada. I really don't know why they made this bizarre choice.
if you are referring to Polyethylene; polyethylene is one of the world's most widely used plastics in the world and can be found in plastic bags, plastic milk cartons and other packaging
It is sold in a printed plastic bag containing three clear oblong plastic bags.