How was stone age man able to survive on his harsh environment?

Which bronfenbrenner level examines the developmental influences of homes, caregivers, friends, and teachers?

When were the exodus of farm workers during the depression

What does it mean to say that "service sector" jobs are predominant in europe's mixed economies today? a. that jobs where people work in factories predominate b. that jobs where people do something for others predominate c. that jobs where people work the land predominate d. that jobs in government predominate