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Metamorphic rocks
Igneous and sedimentary rocks that have been altered from their previous condition through the combined action of heat and pressure below Earth's surface are called metamorphic rocks and the process is called metamorphosis. The changes so brought about are both physical and chemical in character, which alter the structural features of rocks. Many times both the structural features and composition of original rocks are affected simultaneously. In some cases the metamorphism is so pronounced that the new rock looks quite different from the original. The action of water tends to remove some material from, or to introduce new material like silica, lime or iron oxides.
factors which decide the broad area of scientic activity
Procedure : Steps 1 to 3 and step 5 are demonstration steps and will be performed by your counsellor. Observe these steps carefully. 1. The cotton plugs/caps of the test tubes,
Chemical Reactions of Amino Acids The chemical reactions of amino acids can be divided into three classes: i) Reactions of carboxylic group ii) Reactions of amino group
Metabolism All of the organized chemical reactions in a cell which are under the control of enzymes.
Q.What is soil erosion? The blowing away or washing away of land surface by wind or water is known as soil erosion.
Q. What are the different states in which water is found during the water cycle? During the water cycle, water is found in solid state (snow, ice, etc.), liquid state (ground wa
List any three human activities that you think would lead to air pollution. The following three human activities would lead to air pollution: (i) Burning of fossil fuels such
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atomic spices definition?
Define the role of Bacteria in soil flora The most abundant soil organisms are primitive, very minute, unicellular organisms devoid of chlorophyll. Bacteria are most abundant i
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