Answer:
The answer is the accessory nerve.
Explanation:
We have 12 pairs of cranial nerves, the accessory nerve is the XI pair. This is responsible for the innervation of the sternocleidomastoid and trapezius muscles.
The fibers of the accessory nerve originate from neurons that are located in the upper spinal cord. These fibers join together forming roots and once the nerve is constituted, it enters the skull through the great hole that is located at the base of the skull.
Then, the nerve continues its path along the inside of the skull in the direction of the jugular hole and then leaves the skull next to the glossopharyngeal nerve (IX) and the vagus (X).
Thus, the accessory nerve enters and leaves the skull again, characterized by being the only cranial nerve which has this behavior.
Competition is one of the many types relationships in the ecosystem. It is an oppositional relationship because unlike in symbiotic relationships, the organisms do not peacefully coexist. Using the given information above, we can deduce that the two fungi compete with one another in terms of the resources plus the habitat.
Answer:
C
Some vertebrates are warm blooded while others are cold blooded
