The past comes alive through a close examination of original artifacts from ancient communities. (thejewishmuseum.org)
During this time, there was a lot of «evolutionary experimentation», with many ancient communities dominated by alien - looking creatures unlike any of their modern counterparts. (palaeontologyonline.com)
These scientists can study many different subjects, including the microbiology and genetics of living organisms, how species that share the same community adapt to changing conditions over time, and the fossil record (to assess how various ancient communities of species are related to each other and to modern - day relatives). (sciencenewsforstudents.org)