What is the genetic basis of coat-color variation in texas longhorn cattle?

Summarize the work of famous environmental scientists of the past.

Tissues that carry food water and nutrients throughout the plant

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