HOW MUCH CO2 DOES A TREE ABSORB?
Knowing this as well as the average number of trees any region has can be a very valuable debating point...
The formula this guy used is irrefutable - the absorption rate will vary between 10 and 40kg of CO2 per year on average, depending on a whole host of factors.
This is a valuable too of fighting believers in climate change and carbon footprints... as well as those who are flying all over the globe in private jets talking about the sea level rising whilst they purchase homes on the coast... yeah, that...
The two variables that you will need to research are the rates for the region of the globe in question as well as the estimate of the number of trees for that same region.
To read more about the CO2 absorption rate see the EcoTree website.