Hi! Can you please make your question clearer ?
Theory ----> not proved yet
Law --------> a theory which is proved and universally accepted
The nervous system in a frog controls the activities of the organs of the body. It also would regulate the internal environment in one's body. All the organs which are also the same parts of nervous system of a vertebrate are present in a frog. The brain,spinal chord,the sympathetic and para sympathetic nerves,cranial nerves,spinal nerves,cranial nuclei and ganglia.
The answer A. DNA in the nucleus controls all cell activity.
They release the gas Oxygen.
