Translate the following English sentence to French:
"It appears from this study that adjustments are rife but most of these adjustments, in fact, the majority of them, appear to be downward adjustments, the remainder being improvements."
Il ressort de cette étude que des adaptations ont lieu partout, mais que nombre de ces adaptations, la majorité même, se révèlent être des adaptations à la baisse, le reste constituant des améliorations.