Plastic Bags questions 1

I. Why are plastic bags so common?

plastica bags are very common there are over 3 billion plastic bags used every year. they are used mostly for transportation and for garbage. they are one of the most usefull material for transportation, they are ligh, they can carry alot, and they can be reused for many things. but the problem is that not veryone reuses them.
II. In what other ways is plastic used?

plastic is used to contain food, water etc. it is used as a protection for many objects, it has almost the same uses that the metal and the wood have, but they change because of its chemestry.
III. What are the benefits of plastic bags?

they are one of the most usefull material for transportation, they are ligh, they can carry alot, and they can be reused for many things.
IV. What are the dangers of plastic bags?

the danger of these palstic bags mainly is its chemestry, they are made with toxic materials, even the colors and letters are made of toxic materials. over 3 billion plastic bags are used each year and it takes almost 100 year to descompose. they are thrown into the ocean and the turtules are atracted to them and they eat them, later the plastic bags kill them. 
V. What has been done so far?

here in mexico city they have prohibited all plastic bags that are not recyclable. in the US they have made campains against the plastic bags and colective recolections between the citicens to pick up all of the plastic bags that they can find. 
VI. Has it been successful? Why or why not?

not yet because the problem is still the same and the plastic bags are still been produced and millions are been made while only a few are trying to stop it.