1. To maintain order within their cells and organs, all living things must:
A) constantly change.
B) reproduce.
C) carry on metabolism.
D) extract energy from sunlight.
E) be able to move.
2. Scientists have found that ancient fossils
A) bear no resemblance to present-day organisms.
B) are just as similar to present-day organisms as more recent fossils.
C) are more similar to present-day organisms than more recent fossils.
D) are very similar to present-day organisms.
E) are less similar to present-day organisms than more recent fossils.