What adaptation was crucial for early humans thriving in varied environments?

Bipedalism and the control of fire were critical adaptations that enabled early humans to thrive in diverse environments. Bipedalism allowed for more efficient movement across various terrains, freeing the hands for tool use and carrying objects. This adaptability to walk on two legs also improved visibility and energy efficiency, which were advantageous for foraging and hunting.

The control of fire was equally transformative. It provided warmth, protection from predators, and the ability to cook food, making it easier to digest and safer to consume. Fire also extended the day by allowing social interactions and activities after sunset. The combination of these adaptations enabled early humans not only to survive but also to flourish across different habitats, from open savannas to wooded areas.