<u>Sunspots</u> are temporary phenomena on the photosphere of the Sun that appear as dark spots compared to surrounding regions. They are caused by intense magnetic activity.
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Soda-acid fire extinguishers contain sodium bicarbonate and sulphuric acid. It is the most effective house-hold fire extinguisher and it consists of a strong iron vessel .The sulphuric acid reacts with sodium bicarbonate to form sodium sulphate, water and carbon dioxide.
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1 quarter of a million especially young men who have dependents to go into the forestry and flood prevention work.
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