The three correct adaptations that early humans made during the last ice age to survive varied environments are:
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Worked in larger networks of communities - This helped humans collaborate and share resources, knowledge, and support each other in harsh conditions.
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Made stone tools such as hand axes - The development of tools was crucial for hunting, gathering, and processing food.
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Used fire for heat, protection, and cooking - Fire was essential for warmth, safety from predators, and preparing food, which made it easier to digest and safer to eat.
The other options, such as creating religions, planting crops, and taming large animals, were not characteristic of early humans during the last ice age, particularly before the advent of agriculture in the Neolithic period.