Do Plastics Release Toxic Fumes When Burned or Decomposed?

[hamza]

1. Plastics are a pollution problem because mainy plastics:



a)burn to produce toxic fumes
b)decomopose to produce toxic fumes



3. I'm confused with burn and decompose because a thing will burn and afterwards decompose.

 

[Kurdt]

Which one of those statements do you think is true?