The fossil record helps scientists identify a single species from which other organisms have descended. Which is used to refer to this single species?

parent organism
fossils
descendant
common ancestor

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

a. by using fur or clothes to trap heat energy near the body