Water is vital for life on Earth. It covers most of the planet’s surface, forms more than 50% of our bodies,

And is the basis of our food supply. However, it is a unique and irreplaceable resource whose quantity is limited
The understanding of the need for food, shelter, and water among early humans likely developed through instinct, observation, and experience rather than being explicitly taught by someone. Here’s how this understanding may have evolved:

Instinctual Drives: Early humans, like other animals, had innate instincts that drove them to seek out food, water, and shelter. These basic survival needs are crucial for life, and the drive to meet them is deeply embedded in biological and evolutionary processes.
Observation of the Environment: Early humans would have observed their surroundings and the behaviors of other animals. They would notice that certain plants and animals provided sustenance, and that water sources were essential for survival. Over time, they would learn which foods were safe to eat and which were not.
Trial and Error:

Through experimentation, early humans would have discovered what resources were necessary for survival. For instance, they might have tried different plants and learned which ones nourished them or which made them sick.
Social Learning: As humans began to live in groups, they could share knowledge and experiences. Elders or more experienced members of a group could pass down information about foraging, hunting, and finding shelter, helping others learn what was necessary for survival.
Cultural Development: Over generations, as humans developed language and social structures, they could communicate and formalize their understanding of survival needs. This led to the development of cultural practices around hunting, gathering, and creating shelter.
In summary,

Early humans did not have a single source of knowledge about their needs. Instead, their understanding evolved through a combination of instinct, observation, social interaction, and cultural development.