Reptilian ancestry of birds can be indicated by
A. Eggs with the calcareous shell
B. four-chambered heart
C. scales on their hindlimb
D. presence of crop and gizzard
Answer:C
Reptilian ancestry of birds can be indicated by
A. Eggs with the calcareous shell B. four-chambered heart C. scales on their hindlimb D. presence of crop and gizzard