Tree absorbs about 48 lbs of CO2 per year. USA has 228 billion trees. 228,000,000,000 x 48 = 10,944,000,000,000 (11 trillion) lbs of Co2 is absorbed annually by trees alone. Now this does not include all of the other vegetation that exists. The rest of the vegetation absorbs more than 4 trillion lbs of CO2 … Continue reading Canada and the USA are already at Net Zero Carbon. Here are the numbers