Birch and bamboo can absorb more CO2 than they emit when processed into utensils in some cases. They do, in fact, reduce the total amount of CO2 in the atmosphere. When compared to plastic, this makes wood a very environmentally friendly material.
Birch, for example, traps approximately 48 kg of CO2 per 1 kg of biomass.
Carbon is eventually released when a wooden utensil is discarded. However, unlike carbon produced by the combustion of fossil fuels, it is not released directly into the atmosphere. Instead, the carbon is either consumed for energy by other organisms and slowly released as CO2 into the atmosphere, or it is trapped in the soil. Overall, CO2 will return to the atmosphere, but at a much slower rate than burning fossil fuels.