Plastics are very harmful in the society because it contains chlorofluorocarbons which can be the reason of the depletion of the ozone layer.when it is eaten by animals it may cause the death of that animal.
If you mean "as part of the machine" instead of "use the machine to work the plastic": The only real disadvantage is when the plastic chosen is the wrong one for the application, or if the part...
that material should allways be recycled when dissposed of. In the sea it accounts for many fish, marine mammals and sea turtles death due to entanglement.
i dunno :D
jkn jkn!!
Plastic bags may be cheap and easy to use, but they're unhealthy for the planet. This article explains some of the problems that plastic bags cause and what can be done to...