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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.
illness expenditure on health
How to make an overflow can and catch bucket These are useful for the study of Archimedes' principle, which controls floating and sinking. To make an overflow can secure a tin
The Ptolemaic System: The theoretical n'mdel of the universe given by the Greeks had a stationary Earth at its centre, around which the Sun, the Moon and the planets moved in c
Question: a) Describe wet bulb thermometer and wet bulb temperature. b) What happens to the volume of a rising parcel of air and of a sinking parcel of air? c) What do yo
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Explain Total Lung Volume or Total Lung Capacity Total Lung Volume (TLV) or Total Lung Capacity (TLC): It is the volume of air remaining in the lungs after a maximal inspirati
what is another word for 2nd consumers?
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INTRODUCTION : In this unit, we shall discuss the need and the method for reporting an accident. We shall explain the choice of locating the first aid box and state its contents.
Illustrate the physical and chemical properties of soil The cation exchange property is very significant because it affects the physical and chemical properties of soil. The mo
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