Environmental Determinism is the idea that the physical environment (like climate, land, and natural resources) controls how people live, their culture, and even their thoughts and beliefs. This means that things like how people dress, what kind of food they eat, and where they live is determined by the environment around them. For example, if a place is very cold and has no natural resources, people living there would need to wear warm clothes, eat food that can be stored for a long time, and maybe even live in homes built into the ground to stay warm.