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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.
Putting a point on a brush Secure a paint brush of some sort and get the bristles. Now dip the brush in water and you will view that surface tension has drawn the bristles tog
Define the role of Bacteria in soil flora The most abundant soil organisms are primitive, very minute, unicellular organisms devoid of chlorophyll. Bacteria are most abundant i
advantages and disadvantages of protozoa
Occurrence and characteristics of earthquakes
Explain the Hypersecretion (Hyperthyroidism) Or Thyrotoxicosis This condition generally occurs in adult life. This is commonly caused by hyperplasia of the gland and is called
feeding mode of wall lizard
Precautions : The following precautions should be taken while using UV lamps: 1) TJV lamps must always be properly shielded. 2)Wear approved goggles when working with or clo
Describe the factors which decide the broad area of scientific activity/
1. How much variation is there in the routine analysis of fibre content of soya cotton cakes? The data are presented by the lab that did the test and the technician within the lab
The diagram below shows a baffled tank with a six blade turbine agitator: FIGURE 1 (a) Is a side view (b) Is a bottom view (c) Gives dimensions of the tu
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