What keeps the life cycle of a humman

Social mobility: social mobility refers to our chances of moving up or down within the american class structure. what do you think is the most important factor that leads to upward mobility? and why do you feel that way? race or ethnicity gender social class at birth hard work and education

Arelationship where each person relies on the other; a give and take relationship

2) based on the information, which is an opinion rather than a fact about immigrants to north america? immigrants