As a result of their annual survey, the National Geographic Society and an international polling firm Globe Scan gave India top rank in Greendex 2009 score. What is this score?
It is a measure of efforts made by different countries in adopting technologies for reducing carbon footprint?
It is a measure of environmentally sustainable consumer behaviour in different countries.
It is an assessment of programmes / schemes undertaken by different countries for improving the conservation of natural resources.
It is an index showing the volume of carbon credits sold by different countries.