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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.
Enumerate the ratio of rainfall to temperature The effect of climatic agents on the changes taking place in the parent material is determined by the ratio of rainfall to temper
father of environmental microbiology
Changes in Social Organisation: We find that the above trend in social organisation led to a tendency which eventually stifled the progress of these civilisations and led to
A famous downslope wind that occurs in North America on the East side of the Rocky Mountains is called a: chinook
A low-gradient stream would most likely form a: meander
Explain the Menopause The cessation of menstruation is menopause. Natural menopause typically occurs between 45 and 55 years of age. It is caused by changes in concentration of
Define the Transport of Carbon Dioxide in combination with protein Carbon dioxide forms a neutral carbamino compound with haemoglobin. It combines with the haemoglobin in the r
Studying broken rocks with a magnifying glass Study freshly broken rocks with a magnifying glass and try to find crystals of dissimilar minerals. The crystals of dissimilar mi
Explain Examination of Urine Examination of urine is done to detect the presence of any abnormal constituent(s) and hence can be used as an important screening test for identif
Scurvy Disease occurs due to vitamin C deficiency.
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