I-Biodegradable ibhekisa kwimveliso okanye into eyophukayo ibe yindalo, ikharbon diokside, kunye nomphunga wamanzi ngezinto eziphilayo ezinjengeebhaktheriya kunye nokungunda, ezingenabungozi kokusingqongileyo.
Ngokuqhelekileyo, iimveliso ezivela kwizityalo, izilwanyana, okanye iiminerali zendalo ziyabola.