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What is Soil Aggregation and explain its beneficial role
Some organisms may play a beneficial role indirectly by creating better soil physical conditions e.g., by improving soil aggregation. You have read about the role of earthworms in soil granulation. Plant roots also promote soil aggregation with the help of their decay product. Gum or polysaccharides produced by certain microorganisms also cause soil aggregation. Azotobacter, Baijerinckia and Rhizobium are examples of gum producing bacteria.
What a molecule is, and the difference between molecules and compounds? A molecule is made up of two or more atoms combined chemically. The atoms can be of the same element, as
Explain the Mechanism of Phagocytosis In phagocytosis, the organism is entrapped into vacuoles known as "Phagosome". The cytoplasmic granules, organelles or lysosomes fuse with
Measuring atmospheric pressure with a rubber sucker The force needed to pull the sucker away from a smooth surface can be found by using a spring balance. The area on which the
Keep the Concentrations of Ions Constant Keep the concentrations of various ions and other important substances constant. A number of chemicals are important to the blood chemi
Explain Neutral fats Neutral fats are esters of fatty acids with glycerol and found abundantly in nature. These are insoluble in water but readily soluble in ether,
short notes of cholestrol
QUESTION (A) Describe, with diagram, the structure of a neuron (B) ‘Neurons are specialized cells that carry messages.' Describe how messages are carried by neurons (C) F
Question 1. What do you mean by suffix? Write the types of suffix giving two examples for each type. 2. Punctuate the following: If youre able to appeal to listeners and
Ground depressions in areas of Karst topography are called: Sinkholes
A hair hygrometer This device will enable you to read the relative humidity directly without the use of tables. Procure a few human hairs about 30 cm long. Free them from gr
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