42 Providing scientific information and advice with respect to carbon offsetting; technical project studies in the field of carbon offsetting; research in the field of carbon emission reduction; greenhouse gas emission measurement and analysis; quality control testing in the field of CO2 emissions; technical research in the field of carbon offsetting; scientific information, scientific advice and technical support services concerning carbon offsetting; design and development of software in the field of trade in CO2 certificates, CO2 emissions and CO2 offsetting; scientific and technological services as well as research services in the field of environmental science and sustainability; technical consultancy in the field of environmental science and sustainability; consultant services in the field of energy efficiency.