Prior to the 1860s, a. there were many laws restricting child labor. c. adolescence was seen as a separate life stage. b. children were treated as small adults. d. the juvenile-justice system created a distinction between youth and adults.

How are 3-d printers useful in studying evolution? a. to color the fossils of organisms b. to create clones of extinct organisms c. to create replicas of fossils d. to prepare paper cutouts of organisms e. to study the composition of fossils