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Acid solution weathering
Weathering is accelerated by the presence of the hydrogen ions in water. Rain water dissolves CO2 from air to form carbonic acid, H2CO3. When this acid comes in contact with rocks that contain lime, soda and potash, the minerals containing calcium, magnesium and potassium in these rocks chemically change into carbonates and dissolve in rain water. For example calcite in limestone reacts as given below:
Causes of Fire : The potential fire risk arises from the presence of combustible solids, liquids or gases in conjunction with ignition sources. One or more class is generally fou
Life in the Oceans: Oceans are known as the largest and the thickest ecosystem. Tiny plants and animals exist in it, in immense numbers. A cubic meter of sea water may contain
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Vitamin E (Tocopherols) Vitamin E is an essential fat-soluble vitamin that functions, at least in part, as a lipid- soluble antioxidant. Presence of vitamin E was first revea
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Explain Transverse colon and Descending colon Transverse colon: This is a loop of colon which extends transversely across the abdominal cavity in front of the duodenum and th
Nutrient groups and their functions: We should know that our body is made up of different chemical substances which are related to the food we take. Scientists have determine
Why does a glacier move? It moves due to the huge pressure of the ice and snow lowers the freezing point of its lower layers, causing by to melt.
Why do organisms need water? Organisms need water for the following reasons: (i) All cellular processes need water as a medium. Usually, the reactions that take place in our
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