what will happen if the water in which tadpole are growing does not contains sufficient Iodine
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it will not be able to grow and become adult due to nutrition deficiency
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A hormone released by the thyroid gland is a signal for metamorphosis in many amphibians like frogs. This hormone requires the presence of iodine in water for its production. If the water in which tadpoles are growing is deficient in iodine , the tadpoles fail to grow and cannot become adult frogs.
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