I would go for D or A! :)
Because people had as pets when they got to big they let them into the wild and they came a different place
The human body is made up of 11 systems of organs.
The systems are: Circulatory, respiratory, digestive, excretory, nervous, endocrine, immune, integumentary, skeletal, muscle, and reproductive.
D. Same as the number of adenines
Thymine and Adenine will always pair together
:)
