Question

Paleoanthropologists use various measurements to distinguish home erectus from earlier hominins, including increased brain capacity and what changes in the ratio of arm to leg length?

Answer 1

The changes to the ratio of arm to leg length is that the length of the arms are shorter in relation to the length of the legs. This means that homo erectus hominins not only had a higher brain capacity, but also began to appear more human in their characteristics by showing a shorter arm length that we see in humans today.