<h2>Multiple sclerosis</h2>
Explanation:
- Brittany has experienced progressively increasing difficulty moving, speaking, and swallowing due to the deterioration of the myelin sheaths within her nervous system. Brittany most clearly suffers from <u>Multiple sclerosis.</u>
Multiple slerosis is a autoimmune disease in which a person's immune system responds against its own Central Nervous System (CNS). The immune response destroys the myelin sheath of the nerves.
As a result, the transmission of nerve impulse is disrupted. Damage to the nervous tissue is the cause of many neurological symptoms like speaking difficulty, loss of control on voluntary muscle etc. As a whole in multiple sclerosis the patient's brain loses control on his body.
Answer:
Otter
Explanation:
Otters depend on yellow perches, if the amount of yellow perches decrease so will its predators.
The spinal cord is made up of bone and marrow, hope this helps