NOVELTY - A system for reduction of greenhouse gas comprises a reactor apparatus with input (a) arranged to receive supply including carbon dioxide, a input (b) arranged to receive solid material including biomass material and a reactor vessel containing carbonaceous bed into which the gas supplied at the input (a) is injected. The reactor vessel and the carbonaceous bed are arranged to receive biomass material from the secondary input on its upper surface.    USE - System such as plasma gasification reactor system (claimed) for reduction of greenhouse gas.    ADVANTAGE - The reduction process of greenhouse gas using the system is environmental friendly, and is carried out economically.    DETAILED DESCRIPTION - A system for reduction of greenhouse gas comprises a reactor apparatus with input (a) arranged to receive supply including carbon dioxide, input (b) arranged to receive solid material including biomass material and a reactor vessel containing carbonaceous bed into which the gas supplied at the input (a) is injected. The reactor vessel and the carbonaceous bed are arranged to receive biomass material from the input (b) on its upper surface. The reactor vessel is related to energy source(s) to develop heat in the carbonaceous bed to a temperature of about 16000 degrees C and to promote, within a section of the bed, reactions including reaction of carbon in the bed with carbon dioxide in the supply to the input (a) to produce carbon monoxide. INDEPENDENT CLAIMS are included for the following:    (1) plasma gasification reactor system, which is used for treatment of gas resulting from combusted fuel along with conversion of material such as biomass, to produce newly usable fuel; and    (2) process for reducing atmospheric carbon dioxide, which involves sequestering specific amount of gas containing about 50% of carbon dioxide from carbon-based fuel combustion, supplying the gas containing carbon dioxide to carbonaceous bed of a plasma gasification reactor (PGR), supplying feed material including about 50% of biomass to the PGR above the bed, establishing conditions in the PGR, promoting reaction in the bed of the carbon dioxide with carbon to form carbon monoxide and promoting reaction of gases rising from the bed with the biomass to form products including hydrogen and gaseous hydrocarbon compound, and allowing gaseous products to exit the plasma gasification reactor.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of flowchart of system for reduction of greenhouse gas.    Coal (11)    Oxygen (12)    Electricity (13)    Reactor (20)    Plasma energy (22)    Syngas (24)