Some of the uses of green algae are:
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The microscopic green algae are usually nutritious like the angiosperm plants.
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Chlorella and Spirullina are edible green algae which are grown in mass, dried and made into tablets and consumed as a food supplements. It is important since these algae are rich in almost all nutrients, vitamins, minerals, proteins, amino acids and nuclei acid.
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Chlorella is used as the source of oxygen in space flight.
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Chlorella is also used for the treatment of sewage.
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The chlorella also yields the antibiotic chlorrellin. It’s also used in many physiological studies.
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Green algae are also used as biofuel.
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It can act as the indicators of water pollution.
