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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 ?
Explain Sympathetic - Nerves System Sympathetic, as the word suggests, means to sympathize. The body sympathizes during fight, flight and fright reaction. For example, have you
i wants to know about kangaroo because my teacher give me an assignment so for that i wants to know everything about kangaroo
what is Anemia?
Explain the acid/base balance of our blood changes This acid/base balance of our blood changes in response to many things. These include: Diet: the diets that are rich in
What are Fatty acids Fatty acids are grouped into two classes, saturated and unsaturated fatty acids. The terms 'saturated' and 'unsaturated' fatty acid may not be new to yo
Q. What are the preliminary steps involved during preparation of raw materials? Preliminary steps involved during preparation of raw materials include cleaning, peeling, cuttin
Observing changes of position of the earth with respect to the sun Mark a line on the floor or the wall where the sun shines in your room. Note the exact month, day and hour. A
Water Borne Diseases: Diseases like cholera and typhoid, as well as diarrhoea and dysentery, are spread through water. Germs of these diseases multiply in the gut of the inf
summary on parts of the reproductive system
why does the nose on some people turn cold and color purple
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