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.
En experimentos posteriores ocurría lo contrario, el abeto enviaba más carbono al abedul que el abedul al abeto, porque el abeto aún crecía y el abedul ya no tenía hojas.