Oases are a fertile patch of land in the Desert or Semi-Desert Climate. An Oasis Consists of grass, palm trees, and usually a little pond or lake somewhere there. Most of the animals in the Deserts like to come here as it provides drinking water, and even some food. In Egypt, Oases are becoming very important because the Nile River keep on shrinking, and getting lower over the years, and maybe one day, It will dry out, and they will have to rely on oases in the desert. I hope this helps, and Happy Holidays.