To be labeled as such, the material must have the proven capability to decompose in the most common environment in which it is disposed within one year through physical processes, such as exposure to heat and light, into nontoxic carbonaceous soil, water, or carbon dioxide.
(the material; must have; the proven capability) (it; is disposed; T:within one year; L:the most common environment)
the material it
must have is disposed
the proven capability
T:within one year L:the most common environment