Im guessing it is due to gene shuffling
Answer:
Spinal cord
Explanation:
The PNS consists of the nerves and ganglia outside the brain and spinal cord.
Answer:
mutualism
Explanation:
It's a symbiotic relationship beneficial to both symbionts.
in this case E. Coli helps with the absorption of Vitamin K and other important vitamins for the human body in the colon. While, Human (host) provides shelter for it
