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Floating a needle on water
Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are careful the needle will float as you take the fork away. Look at the water surface closely. Can you see how the surface film seems to curve under the weight of the needle ?
what are all the types of cells
Which minerals best illustrates the property of cleavage: Mica
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1. Sketch and explain different regions of phase diagram of water (pressure vs. temperature). 2. Explain how air inhalation and expiration takes place through pressure gradient
Role of communication in promoting education: Transmission of knowledge and information, which is the first step in education, is obviously possible only through communication
Explain why earthworms are said to be the most important soil animals. Earthworms ingest organic matter as well as soil where they mix, granulate and excrete to increase stabil
QUESTION 1 (a) What is the main objective of the Occupational Safety and health Act 2005? (b) State 6 other objectives. Briefly describe them. QUESTION 2 (a) What cr
pour plate and direct microscope count
Explain the Autoregulation function of kidneys The kidneys possess the property of autoregulation. This means that the blood flow in the kidneys remain constant. It is independ
Dew-point temperature You can calculate the dew-point temperature with a shiny can having some water, a thermometer and some ice. The dew-point temperature is an significant we
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