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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.
discuss the importance of society and culture to existence of man .
why and where endomitosis happen?
equilibrium, Physics what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??
DISPOSAL OP CARCASS : After the experiment with an animal is over, the dead animal, i.e. carcass should not be left in the laboratory. The dead animals start decaying and putr
Where friction is desirable and undesirable at the same time.
Explain the law of diminishing return. The increase in the yield by a unit increase of the deficient factor is proportional to the decrease from maximum.
LASER stands for Light Amplification by Stimulated Emission of Radiation: It's a fairly long string of words. Well, don't let it stop you from reading further. What we wish t
State the Chemical and Physical processes of weathering The chemical and physical processes of weathering aid each other. A rock mechanically broken into smaller pieces exposes
advantages and disadvantages of protozoa
Describe the factors which decide the broad area of scientific activity/
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