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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.
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
Explain the Closed System - Thermodynamic The system that can exchange energy with their surrounding but not the mass is known as the Closed System. So, the quantity of matter
A rock weighs 33.6 N on Planet X and 49 N on Earth. What is g on Planet X?
INTRODUCTION : You would recall from your study of Unit 11 that LPG (liquefied petroleum gas) and other compressed gases can pose a danger in the lab. The gas (LPG) supply distrib
What are the differences between stereotypes and prejudicial stereotypes? a) Stereotypes:- The perceived beliefs one forms of another person or group; however an opinion is
Question: a) How does temperature changes in the stratosphere? Give a physical explanation and illustrate your answer using a diagram. b) Write a short note on ozone in the
International economic order: The developing countries mostly threw off the colonial yoke in the 1940s and 1950s, and ever since they have been struggling to stand on thei
Aspirations: We often have to make decisions and choices about hdw to spend our time, money and energy. Sometimes the choices are simple like whether to wear a blue dress or
What are 6 types of neuroglial cells?
kidney ,thyoroid gland
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