ive biological reasons for:
Older people tend to feel more cold.
People living in hilly regions suffer from goitre.
Pancreas is a mixed gland.
Ventricles have thick muscular walls.
Adolescents should be taught stress management
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people living in hilly regions suffer from goitre due to the lack of iodine in their food.
ventricules have thick walls because they have to pump blood to long distances.
pancreas is both duct as well as duct less gland as a ductless gland it has islets of Langerhans scattered throughout the body, the islets contains three hormones those are insulin glucagon and somatostatin and as a duct gland pancreatic juice is poured.
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