Physiological needs are the physical requirements necessary for human survival. If these requirements are not met, the human body cannot function properly and will ultimately fail. Physiological needs are considered the most important; they should be met first. Air, water and food are metabolic requirements necessary for the survival of all animals, including humans. Clothing and shelter provide necessary protection from the elements. After Chuck's plane crashes, he drifts to an uncharted island and briefly scans the island's shoreline across from where he was stranded. He first addressed safety and survival needs. To meet his safety needs, he built a shelter with a raft on which he arrived on the island for protection on this unknown island. And to survive, he started wandering in search of food where he found the coconuts, which are the main sources of food and water for