fences for example sunnier yuba explains what everyone can do to help stop the shifting of the dunes the students are pensive. after seeing this here i'm quite troubled. as you look at some point the sand could reach the town. that makes me afraid. there's only sand left here nothing grows here anymore it's a real desert. she keeps advancing and reaches the people living on the river now and it'll be all over. the outing had a big effect on the pupils they're now motivated over the holidays they're going to environmental camps where they will set up sandra fences and plant trees anything and everything to stop desertification. what's an amazing