The answer is D
Hope it helps
Answer:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. ... They also have the same function. However, wings evolved independently in the two groups of animals
X RAYS ARE USED FREQUENTLY TO MAKE MEDICAL DIAGNOSES.
The aorta is the bodys main artery
They deliver nutrients to all parts of the body.