SVP aider moi a :
rédiger un texte pour montrer comment l'organisme coopère pour que la production de spermatozoïdes est possible:
Hypothalamus – GnRH – Hypophyse – LH – sang – cellule de Leydig – testicules – testostérone – spermatogénèse – production de spermatozoïdes

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

well, i believe that the answer is 2. : 3

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.