It involves chromosomal abnormality; w<span>hen the condition is caused by trisomy 21, (down syndrome), the </span>chromosomal abnormality<span> occurs as a random event during the formation of reproductive cells in a parent. The </span>abnormality<span> usually occurs in egg cells, but it occasionally occurs in sperm cells.
I hope this answers your question. =)</span>
Answer:
C Increase bone strength
Explanation:
Your body adapts to regular moderate exercise by building up more bones making them denser and stronger.
Answer:
complex is the correct answer.
Explanation:
Answer:
Call 911 I think because after or while you call them you could do cpr
