Question

plastic are useful for us

Answer 1

Plastic is used in many ways such as book Binder plastic bags etc

Answer 2

whether you are aware of it or not , plastics play an important part in your life . plastics materials allow them to used in everything from cars parts to doll parts , from soft drinks bottles to refrigators they are stored in .these are widely used beacuse plastics are the material that can provide the things consumers want and need .
 plastics can even help you to conserve your own energy . plastics packaging means lighter shopping to carry homes . plastics are useful because it can be coloured , melted , shaped , squashed , rolled into sheets, or made into fibres plastics . plastics are also hygenic and it is not poison to our body .even plastic is used to make ropes that are very strong and fishing lines , glues , paints etc