Veja também
See also
Intergovernmental agreements, including protocols and amendments, are not legally valid until ratified by a certain number of countries. For the UNFCCC creation, it took 50 countries; as for ratifying the Kyoto Protocol, at least 55 countries were required...
Activities that are part of a candidate CDM project and that provide a reduction in the emission of greenhouse gases or an increase in the removal of CO2. (see question 20 of the ABC of Changes)
After signing an international treaty, such as the Climate Change Convention or the Kyoto Protocol, a country has to ratify the commitment, often with the approval of its parliament or other legislature. The ratification instrument must be deposited with the UN...