Which of these statements is true? It is impossible to date a fossil with any certainty.
Fossils show evidence of descent with modification.
Fossils can only be produced from animals that have hard skeletons.
There are no fossils of transitional forms or "missing links."

The model illustrates a process by which a substance is taken up by a cell. which statements describe the process? a. the model shows the process of endocytosis. b. the process shown in the model requires energy from the cell. c. the cell membrane in the model remains intact throughout the process. d. the model shows the process of facilitated diffusion.