Answer:wind has carried away the dry soil
Explanation:
Producers, because according to food pyramid, only 10% of energy is passed onto the next layer, where the other 90 is passed off as heat, so there must be more producer in order to sustain the ecosystem.
It is the hypothalamus that regulates thirst and body temperature. It is the l<span>imbic system structure that regulates hunger, thirst, and body temperature and contains the so called reward centers of the brain. Hope this answers the question.</span>