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Holding water in a sieve
Pour some oil over the wire mesh of a kitchen sieve and shake out the overload so that the holes are open. Cautiously pour water into the sieve from a pitcher, letting the water run down the side of the sieve. When the sieve is about half full, hold it over a sink or pail and observes the bottom. You will see the water pushing by the openings but the surface tension keeps it from running by. Touch the bottom of the sieve with your finger and the water should run by.
To show the presence of nodules of nitrogen-fixing bacteria on the roots of legumes Carefully spade up some leguminous plant like as clover, alfalfa, soy-beans, cow peas, etc.
Ingestion : The standard treatment for this type of poisoning is as follows: (1) Tell the casualty to spit out as much of the material as possible and then wash the mouth thoro
Hard and soft water in cleaning Prepare two samples of dirty cloth. Wash one in soft water with soap unless it is clean. Wash the other cloth in hard water for the similar leng
how semiconductor detector works
What is shale? It is a fine-grained, earthy, sedimentary rock like clay, but produced in thin layers.
Define the functions of the Macrophages The macrophages: 1) phagocytose microorganisms and inert particles 2) secrete IL-1 (Interlukin I), TNF (tumor necrosis factor),
Curing methods: The most impbrtant curing methods were classified under five heads, namely, inducing vomiting, giving purgative, enem;, oily enema and nasal therapy. Specifi
difference between micro and macro nutrients
State about the Peaty soils Peaty soils occur in humid regions and have an accumulation of high organic matter. Such peaty soils containing considerable amount of soluble salt
a. Which type of ripple marks would you expect to see on the bed of a river? Why? b. Which type would you expect to find on the floor of a standing body of water? Why? c.
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