Uses of rice husk !

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In some region like Asia rice is the main crops for most farmer. @103 The rice husk [yellow/gold] is the outermost layer of the paddy grain that is separated from the rice grains during the milling process. Around 20% of paddy weight is husk and rice production in Asia produces about 770 million tons of husk annually. The waste is also use for brick industry and result wasted black ash and good for some plants. Some farmer even use it for cooking . Rice husk can replace with fire wood and charcoal and gas. But it produce a lot of black air lo. Picture show the burning stove with rice husk [yellow] What do you think ?