Answer:
fish and tetrapods are both vertebrates that have a backbone with a spinal cord. fish lived before tetrapods because their fossils are in rocks over 500 million years old.
Explanation:
fish and tetrapods are both vertebrates that have a backbone with a spinal cord
Blood group b would exclude a male from being a father
The first mutation is substitution and the second is deletion
The aquifer must be permeable and porous to allow the water to flow through.