By detecting and responding to the body's physiological signals, the feeding cells in the is the part of the body in control of hunger regulation.

The answer is hypothalamus. The hypothalamus is a bit of the cerebrum that contains various little cores with an assortment of capacities. A standout amongst the most critical elements of the hypothalamus is to interface the sensory system to the endocrine framework by means of the pituitary organ. 
The hormones from the hypothalamus represent physiologic capacities, for example, temperature direction, thirst, hunger, rest, inclination, sex drive, and the arrival of different hormones inside the body. This region of the cerebrum houses the pituitary organ and different organs in the body.

He should put sand around the spill in order to contain it so that it won't spread

The zone your looking for is the intertidal zone.