GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
You are here:
Verb
Yng nghyd-destun deunyddiau anorganig (ee plastig), ymddatod yn ddarnau llai dros amser drwy weithrediad bacteria a meicro-organebau eraill.
Gweler hefyd y cofnodion am degrade a decompose.