Posted by: Pdfprep
Post Date: February 1, 2021
A tour guide points to a water-filled tank containing live specimens and says, “Ancestors of this organism developed earlier in Earth’s history than any other organism here at the aquarium.”
The guide must have been speaking about which organism?
A . sponge
B . trilobite
C . fern
D . flowering plant
E . mammal
Answer: A