Translate the following English sentence to French:
"For all of these reasons the Group of the Greens/European Free Alliance always defends the railway as an alternative means of transport - currently underexploited - which wastes fewer resources, and is cleaner and more respectful of the natural environment."
C'est pourquoi le groupe Verts/Alliance libre européenne défend toujours le chemin de fer comme moyen alternatif - aujourd'hui négligé - car il gaspille moins de ressources, il est plus propre et plus respectueux du milieu naturel.