Biological and Physiological Needs

These would be the needs a homeless individual would need to focus on. Without food and shelter or warmth the individual's life would be in danger and any chance of climbing the pyramid would be erased. If the individual cannot fulfill the lower stages of the pyramid they cannot focus on the less basic needs. They will need to focus on having something to eat and a place where they can keep warm. These basic needs include air, food, drink, shelter, warmth, sex, sleep, etc.