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:
Each body system is dependent on one another in some way. The skeletal system is dependent on the muscle system for movement, the respiratory system is dependent on the circulatory system, etc. If one body system were to fail, the other body systems dependent on it would struggle to complete their functions as normal. Blood pressure either falls or rises, their oxygen levels drop, and the more their body systems struggle to complete their functions, the more tired they get and they eventually give up. This is what causes septic shock, which is when all organs fail and blood pressure decreases because of an infection.
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Answer:
The mechanical advantage of a 3rd class lever is always less than 1. For this class of levers, the input effort is higher than the output load, which is different from second-class levers and some first-class levers. However, the distance moved by the load is greater than the distance moved by the effort.
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