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प्रश्न
Write any three economic importance of algae.
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उत्तर
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Agriculture: Some of the blue-green algae are essential for the fixing of atmospheric nitrogen into the soil, which increases the fertility of the soil, for example, Nostoc, Anabaena.
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Agar-Agar: Agar Agar is extracted from some red algae, namely Gelidium, Gracillaria, etc., which is used to prepare growth medium in laboratories.
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Iodine: Iodine is obtained from brown algae like Laminaria (kelp).
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