Fossil evidence suggests that these three animals can be classified in the same phylum, chordata, but in three different
a) classes.
b) kingdoms.
c) divisions.
d) domains.

Fossil evidence suggests that these three animals can be classified in the same phylum, Chordata, but in three different classes. Correct A The three classes of Chordata are: Urochordata (tunicates), Cephalachordata (lancelets), and Vertebrata (vertebrates).

69 is the correct math for the amino acids