Here's how you can categorize the statements about prehistoric hunter-gatherers:
True:
- Were nomadic
- Developed the use of fire
False:
- Built permanent dwellings
- Irrigated and farmed the land
Hunter-gatherers were typically nomadic, moving to follow animal migrations and seasonal vegetation, and they used fire for cooking and warmth. They did not build permanent dwellings or engage in irrigation and farming, which are characteristics of later agricultural societies.