Respuesta :
Answer: Natural Selection and Homologous Structure.
Explanation: The ancestors of the giraffe had small necks and when the short heighted bushes and shrubs were finished by them then there was evolution of giraffe's neck.
The neck of the giraffe became long and long neck giraffes were naturally selected.
Despite the long neck sizes of giraffes and short neck sizes of human beings the vertebrae are same in both the organism due to homologous structure.
Answer:
Answer: Natural Selection and Homologous Structure.
Explanation: