Forums for authors with traditional publishing aspirations have long been peppered with
threads about the query grind, the rejection letters and emails that pile up from agents and publishers, and the desire to quit and give up on the hopes of ever making it as a writer.
To Wheelsoc, to explore your
queries (comment 1 in this
thread)
about CO2 and tree growth, you could go to http://rstb.royalsocietypublishing.org/content/367/1588/601.full.pdf see figure 6 (amongst other information) that would interest you.