Answer:
Finding shelter in caves
Step-by-step explanation:
The first human beings had a nomadic life and did not walk in packs. They were dependent on hunting to survive and spent the entire day looking for food and shelter. The shelters were of extreme importance to protect themselves from predators and the climate, which could be very cold and impair survival. One way to escape this type of climate was to take shelter inside caves that provided an environment at a more beneficial and comfortable temperature, being essential for the development of the human race.