An actively growing tree absorbs about 26 pounds of carbon dioxide a year. How many years would it take a growing tree to absorb 390 lbs of carbon dioxide?
You don't have enough information. You need growth rate/year and maybe endpoint year of growth to get the yearly lbs. of CO2 and assume the immature tree is 0 year, avg.growth/year i.e it is an exponential function like interest compounded starting with $26 and when will it reach $396 at x% interest /yr constant growth. Otherwise, you are saying a certain mature tree will take in 26 lbs., how many years before it will have taken in 396 lbs. or 396/26.
+37091 Agree with what you are saying, but I think this question is more likely what a MATURE tree will do year after year ..in growing leaves and increasing girth..which would be APPROXIMATLY constant .(but actually it would be increasing as you pointed out....especially as the tree is a sapling and growing to maturity)....good call, but I just answered the question with the info given....
