Under Article 3.3 of the Kyoto Protocol, Annex I Parties can recognise the biosequestration, the removal of carbon dioxide from the atmosphere by Carbon sinks, created by direct human-induced afforestation, reforestation and deforestation since 1990, in determining whether they have met their emission reduction commitments under the Protocol. When sinks have resulted in the net removal of greenhouse gases from the atmosphere, Annex I Parties can issue removal units (RMUs).[2]