Vestigial structures. These are structural elements that once served a purpose but as the organism evolved now serves no purpose.
The answer to the question is A
Dissolution
Oxidation
Carbonation
Hydrolysis
Answer:
D.can be good for the environment and for people
we have been evolved through same root, during the process we get separated and develop new features to adjust in the surrounding atmosphere, that's why our genes are matching with fruit flies and others.
