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.
Durante esperimenti successivi  trovammo una situazione contraria, nella quale era l'abete  a inviare più carbonio, perché stava ancora crescendo,  mentre la betulla non aveva le foglie.