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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 ?
advantages and disadvantages of protozoa
Explain the Kidney as an Endocrine Gland The kidney produces substances that can be described as hormones. Hormones are the chemicals produced by glands in the body and circula
can anyone tell me at least three adaptation that help humans have differential survivability, and three adaptations that help humans have differential fecundity? any help
respiration in different animals
to study the presence of aroma taste,ph value and tannic acid of diffrent tea leaves
what is nutrition?
PROCEDURE Locate the gas cylinders available in the lab. Note the colour of the cylinder (to a maximum of two and exclude the LPG) and bands on it (if any) and record them i
what are th precuotionarymeasures signs,symbols
What ways can igneous rock form two ways? Igneous rocks are formed when melted material crystallizes, e.g. from magma.
INTRODUCTION : Gas, Electricity and water are integral parts of any science laboratory. You would have realised from personal experience (if any) and in the course of your study o
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