he males that she is ready to mate. The swelling is sensitive, but does not hurt. It may last for two weeks.Man made its entry on this planet during the final to epochs of the Cenozoic- the Pliocene and the Pleistocene. Man appeared about 5 m.y.a. The earliest discoveries of that were made in South Africa. It is believed that Man originated from the primates and different eras do show that primates underwent a lot of changes and the most recent ones are very similar to humans.We have seen the changes that have occurred in the primates over a period of about 63 million years. We have observed that all these changes have been made to make the primate adapt better to its surroundings. These changes include the modification and then disappearance of the tail. As time passed and the forests became less dense the primates became more adapted to terrestrial life. ...
