how do mental changes in elderly affect their social relationship?
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By preventing them from being able to properly sociallize.

Explanation:

I'm no expert but from my understanding... As we age, things become harder to do. Often times we are taking less infomation in. We are unable to understand, to remember, and to pay attention as well as we use to in our youth. Which can give little opprintunities to form any social relationships.

it's false.

"every person has their limitations which prevent us from accomplishing something. some are better than mathematics for example and some are worse. those people who are worse might never be able to become mathematicians, but that does not mean that they would not be great at doing something else."

i think she would gain 18 grams