Which characteristic is not a characteristic of plastic?

As long as it is not one of these:
 -resistance to corrosion and chemicals
 -low electrical and thermal conductivity
 -high strength-to-weight ratio
 -colors available in a wide variety and transparent
 -resistance to shock
 -good durability
 -low cost
 -are easy to manufacture
 -are resistant to water
 -have relatively low toxicity


hope this helps