Answer:
option d
Explanation:This also refers to structures that are not present in an organism, but were present in its ancestors, i.e. traits that have undergone secondary loss.
Mutations occur when DNA makes a mistake in cell division. This could change the appearance and other disorders of a person. An example would be sickle cell anemia.
The answer is principal procedure, this is a procedure in
which they perform treatment in a more definitive way than other ways such as
having to do diagnostic procedure or other purposes that can contribute to the
treatment or the procedure being done.
Explanation:
sorry for the handwriting
