Answer:
Primary osteoarthritis is mostly related to aging. With aging, the water content of the cartilage increases and the protein makeup of cartilage degenerates. Repetitive use of the joints over the years causes damage to the cartilage that leads to joint pain and swelling
Explanation:
<span>B. you’ve lost weight before but gained it back due to lack of physical activity
This is cause by personal lack of activity
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The regulatory system given to this particular question would be Homeostasis. homeostasis means that it creates a balance between things that are interdependent upon each other.
