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How the lungs work
Cut the bottom off a large bottle. Fit a cork to the neck with a Y tube in it. On every of the lower limbs of the Y tie a rubber balloon or a number of small bladder.
Tie a sheet of brown paper or sheet rubber round the bottom of the jar, with a piece of String knotted by a hole and sealed with wax. Pulling this string lowers the diaphragm and air enters the neck of the Y piece causing the balloons to dilate.
Pressing the diaphragm upwards has the opposite effect.
Soil particle distribution The grouping of soil particle distribution into different groups has been done, though arbitrarily, each group represents a range. The limit does no
What are the properties of a cell?
What are the Advantages of Acid Soils The acid soils, formed by any of the above processes, behave as very strong acids so much so that pH is quite low even in partial convers
Explain the property of Water Water has a significant property called surface tension that markedly influences its behaviour in soils and may be measured by level of water rise
Where friction is desirable and undesirable at the same time.
Fission, and fusion energy: 'The Italian navigator has arrived in the new world' This coded message announced the beginning of the atoyic age on 2nd December? 1942. The 'n
Moisture comes from other plants Secure a flower pot which has some bean or pea seedlings that are 10 or 15 cm in height. Cover the top of the pot with cellophane or sheet rubb
Sterols- steroids containing an alcoholic group at C-3 position and a side chain of 8 to 10 carbon atoms at c-17
Question 1 Define Eco-labelling. Explain the environmental importance of eco-labelling with examples Question 2 Discuss the elements of environmental roadmap for eco
Precautionary Measures Against Ionising Radiations The following guidelines are suggested for experiments using low activity radioactive materials: (1) Avoid skin contact
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