It is the spinal cord that does it.
It changes because it goes through phases of growth and changes size and it developed more.
Hope this helps.
Vitamin B6 is essential for the synthesis of T cells. These cells form part of the immune system.
<h3>What is Vitamin B6?</h3>
Vitamin B6, also called pyridoxine, is a water-soluble micronutrient found in different types of foods.
Vitamin B6 is required to generate T cells and white blood cells (lymphocytes), which are cells of the immune system.
Vitamin B6 is also fundamental for the generation of interleukin-2, which is a molecule involved in immune responses.
Learn more about vitamins here:
brainly.com/question/1327898
This magnet is the inner core. The inner core of the earth is made iron allowing it to have magnetic qualities. BTW, this is physical science. Just thought to let you know.