Answer:
(a) People with
swollen necks are suffering from goitre due to deficiency of iodine in the their
bodies.
(b) Iodine is
essential for the synthesis of thyroid hormones- and which
are iodinated forms of tyroxine. Deficiency of iodine in our diet results in
hypothyroidism and enlargement of the thyroid gland occurs place.
(c) Hypothyroidism
during pregnancy causes defective development and abnormalities in growing baby
like stunted growth (cretinism) mental retardation, low intelligence quotient
(IQ) abnormal skin, deafmutism, etc.
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