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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.
Safety spectacles : Safety spectacles need to be used where there is the slightest risk of splashes of chemicals or fragments of dust, glass, etc. getting into the eyes.
What ways can igneous rock form two ways? Igneous rocks are formed when melted material crystallizes, e.g. from magma.
How can percentage of solid particle been calculated The percentage of solid particles and pore space in a soil may be calculated from the bulk density and particle density if
(friction is necessery evil)
A physician notes that in a patient there is impaired vibration and position sense, astereognosis, and ataxia. The physician noted loss of all sensations in some areas of the patie
Question 1 Analyse the present state of environment system by performing Economic analysis Question 2 Discuss the reasons for the market failure in Environmental Eco
Explain the Hyperpnoea It is a term for an increase in the rate and depth of respiration. The cause of hyperpnoea may be voluntary or due to impulses from the hypothalamus.
why sea water have high salinity compared with pond water
Explain Non-protein Functions of Amino Acids The non-protein functions of amino acids are presented in the following section. It is interesting to note that the non-protein fun
Describe the factors which decide the broad area of Scientific activity.
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