Answer:
In a reflex action, the spinal cord along with the brain stem is responsible A few examples of reflex action are: When light acts as a stimulus, the pupil of the eye changes in size.
The extrachromosomal piece of dna found in prokaryotes is called Plasmid.
it is ring shaped and confers characteristic properties to them such as resistance to Antibiotics .
It is considered evidence for evolution because it shows that the ancestors of snakes had legs that over time lost their need, making them evolve into snakes with vestigial legs.
The diaphragm is the other main muscle involved in the pulmonary system and is responsible for creating the pressure changes that a case inspiration/ expiration.