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Driving a boat by surface tension
Secure some gum camphor at the drug shop. Cut two or three boats from stiff paper, every about 2.5 cm in length. Cut a notch in the stern large sufficient to hold a small lump of gum camphor in contact with the water without letting it fall out. Float your boats in a large pan of water.
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What is the structure of the urinary bladder? The bladder is composed of four layers of tissues. The outermost serous membrane is a thin membrane lining the closed cavities of
How is the parathyroid hormone secretion regulated? It is simple. An increase in parathyroid hormone causes an increase in calcium absorption from the intestine and renal tubul
how many element found in nature.
define gravitational PE
Natural resources: Resources, or the wealth nature has bestowed on us are essential for civilised living, and therefore, they have to be wisely used. However, it is believed th
Technical Developments in Feudal Society: Other innovations used and improved by the Europeans were the lenses and the spectacles. This gave an impetus to the further study
Explain Bile Salts - Constituents of Bile The liver is the site for synthesis of bile salts. The amino acid glycine is synthesized in the body. Taurine is derived from the sulp
To show which types of soil hold water best Tie cloth over the end of various lamp chimneys and then fill every one to within 8 cm of the top with dissimilar types of soil. Use
How to make a simple apparatus for distilling water You can make a easy water-distilling apparatus from a flask, and a length of glass or rubber tubing. Fit the flask with a si
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