Earth’s atmosphere protects life by blocking harmful solar radiation, regulating temperature, and containing oxygen for respiration. It also acts as a shield against meteoroids and space debris, preventing them from reaching the surface.
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Yes, white patches on dark clothes during hot summers are often caused by salt deposits. Sweat contains salts and other minerals that, when evaporated, leave behind white residue on fabric, especially noticeable on dark-colored clothing.
Newspaper clippings reveal various separation methods: filtration of water at treatment plants, sieving of soil and gravel at construction sites, and centrifugation in dairy farms to separate cream from milk. Each method aids efficiency.
A script for a play featuring Malli and Valli’s Bharat ki Yatra and the methods of separation they observed. Malli: “Valli, remember the water purification plant? We saw filtration there!” Valli: “Yes, and at the dairy, the centrifuge separated cream ...
First, use water to dissolve the salt, then filter to separate the sawdust. Next, remove the salt solution through evaporation, leaving salt crystals. Finally, remove the potatoes by hand from the remaining mixture.