english: And then in later experiments, we found the opposite, that fir was sending more carbon to birch than birch was sending to fir, and this was because the fir was still growing while the birch was leafless.
non_english: In latere experimenten vonden we  het tegenovergestelde: de spar zond dan meer koolstof  naar de berk dan omgekeerd, omdat de spar nog steeds groeide,  terwijl de berk bladerloos was.