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Define Platelets
Blood platelets, the third blood cells are the smallest formed by the pinching of a very large bone marrow cell called megakaryocyte. Platelets literally mean a small plate. The platelets form a plug to stop bleeding when an injury disrupts the lining of the blood vessel. Their diameter is about 2-3 μm, hence they are much smaller than erythrocytes. Their density in the blood is 2, 00,000-3, 00,000 /mm3.
Why Rainfall is imprtant factor in active soil formation Of the various climatic elements that take part in active soil formation, rainfall or precipitation is the most importa
Disinfection of water streams originating from potable water plants is key in protecting environmental health. Describe the process design and application, along with potential pro
INTRODUCTION : In the first unit of this block you read about hazards due to electricity and gases in the science laboratories. 'The second unit deals with yet another type of com
classification of animals
You can observe the buoyancy of water Make an equivalent arm balance. Secure two soda water-bottles and suspend them with loops of string from either side of the arm. Unless th
TO SHOW THAT AIR HAS WEIGHT Drive a thin nail by the exact centre of a long rod such as a metre stick or a yard stick. Balance the stick by resting the nail on the rims of two
Explain the Hypoxic Hypoxia It is a hypoxia resulting from defective oxygenation of the blood in the lungs. It is a problem in high altitudes where pO 2 of the arterial blood
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How did it change from Mendeleev to Mosely?
make a list of food item used at home .categorize them as healthy food [energy giving, body building and protective food] and unhealthy food [fried and greasy]
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