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Why is there more exchangeable calcium than potassium on clay/humus colloid?Calcium is usually abundant except in acid soils which occur in humid area due to excessive leaching. Compared with K-minerals like mica, Ca -bearing mineral like lime are usually much more soluble. Therefore, there is more exchangeable Ca than K on clay/humus.
An experiment with a bottle and cork Tightly close a liitle bottle with a cork or rubber stopper. Place the bottle in the receiver and remove some of the air with the pump.
Energy Flow in the Ecosystem The principal source of energy for any ecosystem is sunlight. All food materials that we or other animals consume are manufactured directly or i
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Role of Communication in the Economic Development: This is as much as one-sixth of the world's population. In the year 1981,446 million Indians were illiterate, i.e., they co
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Layers of the Sun: Tbe Sun's body is made up of several layem Tbe layer that forms the viable surface of the Sun is called the photosphere-it is the surface that demarca
what is nutrition?
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