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Cement and concrete
Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.
Define Hypoparathyroidism Hypoparathyroidism or a decrease in the secretion of parathormone causes an upset in calcium metabolism. Hypocalcemia develops and the muscles go into
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#2 DESCRIBE THE APPEARANCE OF THE STOMATE AND THE GUARD CELLS.
To study a hailstone When it hails, collect some of the hailstones. Cut them in half and view how the ice of the hailstone has been built up in layers. If you live in a region
Explain Transport of Oxygen by Red Blood Cells Oxygen combines with haemoglobin, i.e., the red pigment in red blood cells. It combines with oxygen in the lungs, transports it a
What is the lifespan of a simple squamous epithelial cell?
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Determine the role of Time in soil formation Time plays a very important role in the soil formation as it provides for the soil forming processes to act and cause significant c
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Explain the Dichromates or Mild Colour Blindness A dichromate individual possesses only two cone pigments. Lack of the red pigment, called protanopia, makes distinguishing of t
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