Could be- Or they could have been a good investment for the ratio of effort to food gained. In the case of the cave bear it may have been a case of killing of creatures that could be predators when humans were not in a pack and competed for the same shelter sources.
Could be- Or they could have been a good investment for the ratio of effort to food gained. In the case of the cave bear it may have been a case of killing of creatures that could be predators when humans were not in a pack and competed for the same shelter sources.