What hardships might be caused to early humans by lack of wood stone and metal?

Early humans faced significant hardships due to a lack of wood, stone, and metal, as these materials were essential for survival. Without wood, they struggled to build shelters, create tools, and start fires for warmth and cooking. The absence of stone limited their ability to craft sharp tools and weapons for hunting and protection. Additionally, a lack of metal would hinder advancements in tool-making, impacting their efficiency in agriculture and craftsmanship, ultimately affecting their ability to thrive in their environment.