In the early 1900s, what is now known as "social casework" expanded from children's aid and charity organization societies to:

The answers are
- medical social work
- school social work
The social work that they did in the field of medicine involved giving free medicine To poor people who couldn't afford to buy one. In the educational (school) field, they did this by providing scholarship application for poor people who don't have the money to enter in regular ways

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.

The one that most represents the earths mantle would be the skin since the mantle is the upper part of the earths depths which is just like the skin of an apple.