Now, large herds dung and urinate all over their own food, and they have to keep moving, and it was that movement that prevented the overgrazing of plants, while the periodic trampling ensured good cover of the soil, as we see where a herd has passed.
Men store flokke skider og tisser over al deres føde så de er nødt til at flytte sig hele tiden. og det var denne bevægelse der hindrede overgræsning mens den regelmæssige trampen sikrede god dækning af jorden som vi ser når en flok har passeret.