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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.
we know that if you went out into space and went around... lets say Jupiter for... 100 years you would of aged only 100 years but when you went back to Earth the planet would of ev
Air pollution by Carbon monoxide: Carbon monoxide is produced when organic materials such as gasoline, coal, charcoal, and trash are incompletely burnt. Virtually all stoves,
the characteristics of the core
Q.Name two biologically important compounds that contain both oxygen and nitrogen. Two biologically important compounds that contain both oxygen and nitrogen are: (i) Amino a
Explain Factors Affecting viscosity of Blood Viscosity of blood affects the systemic blood pressure in the same way as changes in the peripheral resistance. In anaemia, viscos
Procedure : A mock fire may be created by spilling a flammable liquid like alcohol, petrol etc. and lighting it at a safe place away from the equipments and working benches. Th
Water extinguishers : Direct the jet at the base of the flame and keep it moving across the fire. Attack a fire which is spreading vertically at its lowest point and follow th
Disposal of Unserviceable and Obsolete Items : Every institution may have evolved its own procedure for the same. Generally the following procedure is used for the disposal of uns
Explain the Hyposecretion or Hypothyroidism in Adult Life Decreased secretion of thyroid hormone results in the development of myxoedema. There is a slowing of mental and physi
what is an easy way to learn everything about photosynthesis?
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