The early hominid stages can be differentiated from one another based on the complexity of the tools used by these species. The tool evolved along with the evolution of the humans. The more the hominids evolved by more complex their tools became. The tools made by the earliest hominids were used to fish out the termites. These tool developed and became more widely used as the humans evolved.
Hence, the answer is 'by observing the complexity of the tools'.
The answer is hematoma. Uncertainty a postpartum woman has severe perineal pain notwithstanding use of bodily ease measures and treatment, the nurse must check for a hematoma by examining and palpating the part. If one is found, the nurse required to notify the main care provider as soon as possible.
