Answer:
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Explanation: :)
Answer:
B) The inhibition of normal myelin development in the individual's brain
Explanation:
Phenylketonuria is a disorder characterized by abnormal levels of phenylalanine in the body. It is <u>caused by mutation in DNA that leads to the deficiency of an enzyme known as phenylalanine hydroxylase, which converts phenylalanine to tyrosine</u>, a fundamental substance for dopamine production - related to working memory.
Some of the symptoms of this disorder is intellectual disability, which is caused mainly by demyelination or defective myelin biosynthesis, leading to the <u>inhibition of myelin, a fatty insulating sheath that protects nerves</u>.
Therefore, the cause of the intellectual disability in the individual is <u>the inhibition of normal myelin development in the individual's brain.</u>
Answer:
<h2>
C) the fall of communist states in Europe</h2>
Explanation:
<h2>
The year 1989 was a tumultuous one around the world, and it say the fall of Communist states in Europe. While not all were gone by the end of the year, Poland, East Germany, Romania, Bulgaria, and Czechoslovakia all were the site of challenges to Communist authority. These events were not lost on many Chinese, who also desired democratic and capitalistic changes. These desires eventually led to what became known as the Tiananmen Square Protests, and eventually led to the massacre of countless protestors at the hands of the Chinese military.</h2>
<h2><em>Let me know if it is correct or not</em></h2>
