Which of the following is considered a reference document? a. an order form for office supplies b. an invoice for new filing cabinets c. a brochure for office furniture d. a check for new office software

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