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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.
Define Gynaecological Cancers Gynaecological cancers include cancers of the cervix, breast, endometrium, ovary, vagina, vulva and rarely, the fallopian tube. Cervical cancer is
THEORIES OF ANTHROPOLOGY
what are the different respiratory disease in man . give their symptoms and cause
is salt separated by filtration
what is the first layer of the earth
Forest and hill soils The hill and forest soils seem to be akin to soils developed in humid temperate regions, and have been found to include podsolised soils, brown Earths an
Explain Bile - External Defence Mechanism It is an alkaline secretion of the liver, which checks the growth of foreign bacteria on the partially digested food.
Beth ydy cell fur yn wneud. diolch!
Rutherford atomic model
What are the part of the ear.
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