The challenges humans faced is the climate weather and temperature. Which means they had to learn to adapt and have survival skills. Because of these factors, they have the issues of finding a settlement and growing crops and domesticating the animals. Technically, the transition between the Paleolithic and Neolithic is the turning point for the nomads. Where people began to have a settlements, easier growing foods besides hunting and gathering, have their own domestic animals to help them do the fields and etc. Which domesticating an animal led to selective breeding.
The statement is true. The salary measurement of American society, based on statistics published by the US Census Bureau takes into account the average annual income of women with respect to men in full-time jobs maintained for one year. According to this measure, the average income of women represents 77% of that of men.
