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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.
economic importance
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 Neutrophils They form about 50-70% cells. They have fine dust like particles in the cytoplasm which stain purplish. Tissues, cells damaged by the invading microbes rele
write 2 kinds of energy sources
PROCEDURE : Your Counsellor will be performing the following experiments. You are advised to observe the disposal methods carefully. Experiment 1: Test for studying miscibility
how to prevent skin problems?
FIRE HAZARDS IN THE LABORATORY : The average science laboratory is a particularly hazardous area when it comes to fire. Flammable liquids, compressed and liquefied gases, hazard
explain the factors that led to the decline of science in europe during iron agen..
Pieces classification by order
Explain the Hyperinsulinism - Insulin Too much secretion of insulin or over treatment of a diabetic person with insulin may cause hyperinsulinism. In this condition, the blood
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