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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.
pour plate and direct microscope count
so say if a car was going at 50km in a hour I would not no how to work it out help me:(
two human made features o the aerial map
Optics: The prevalence of eye diseases in the desert and tropical countries led to the study of the eye by Arab doctors. Surgical treatment of the eye led to renewed interest
what is the implication of the first law on humans
Enumerate in brief about the Earthworms There are several species of earthworms, having slender cylindrical bodies with varying diameters. These organisms ingest the dead organ
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butterfly
THEORIES OF ANTHROPOLOGY
Determine about the Chemical weathering Chemical weathering is accelerated by the presence of oxygen, and organic and inorganic acids resulting from the microbial breakdown of p
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