Discuss the Underlying Reasons Why an Increase in Cooperative Social

question 43

Essay

Discuss the underlying reasons why an increase in cooperative social behavior was part of how the first humans, especially H. erectus, overcame environmental pressures. What kinds of activities helped foster this change? How were dietary changes related to increases in social cooperation?

---

Definitions:

Proliferative Phase

A phase of the menstrual cycle in which the lining of the uterus thickens in preparation for potential pregnancy, driven by the hormone estrogen.

Menstrual Phase

The phase in the menstrual cycle where the uterine lining is shed, resulting in menstrual bleeding.

Endometrium

The inner lining of the uterus, which thickens during the menstrual cycle in preparation for implantation of a fertilized egg or is shed during menstruation if no pregnancy occurs.

Embryo Implantation

The process by which a fertilized egg attaches itself to the lining of the uterus to begin pregnancy.