Answer:
it's may be genetic.
<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
Karyotype helps to study the presence and location of genes on chromosome. This also helps to find the mutations such as duplication or deletions.
Most of them are located to the right side of the periodic table
Answer:
B. External respiration
Explanation:
Respiration means transport of oxygen to the cells within tissues, and the transport of carbon dioxide in the opposite direction.