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It is the process of separating colloidal and suspended impurities from water by passing it through a porous bed made of fine sand and other proper sized granular materials. Filtration is carried out in a sand filter. It consists of a top thick layer of fine sand, placed over coarse sand layer followed by gravel. Water comes from the top.
Small micro-organisms present in sand voids decompose organic matter and remove some of the biological impurities.
how do work in human body and animals
Define Some Example of Acidic and Basic Buffer? Frequently used example of acidic and basic buffer includes: - Acidic buffer: a mixture of CH 3 COOH (acetic acid) + CH 3 C
Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system? A. Action potentials in the fibers of the diaphragm musc
Hydrogen bonds are important for all of the following except:: a) Allowing carbohydrates to dissolve in water b) Stabilizing the three-dimensional shape of proteins. c) Ma
What is Cuticle? The nonliving, and noncellular outer layer of an organism secreted by underlying epidermis. Cuticles are common in a range of animals including nematodes, anne
Explain about the optic disc The optic disc is also called a blind spot while the macula is referred to as the yellow spot. The ora serrata (the intersection between the retina
Define Obesity - Excessive Fat Intake? In obesity, cutting down total energy intake or increasing output to ensure energy balance is the basic principle of prevention. Fat bein
Define Functions of sodium and chloride? So far you have learnt that most minerals participate in important functions of body as they support the activity of specific enzymes.
phylum and chordata ex. and their classiication
CILIA AND FLAGELLA Purkinj e first observed ciliary movement. Hodge studied detail structure of sperm flagellum. Manton studied structure of cilia in plants.
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