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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.
a) What additional substances does a plant need to make amino acids and proteins from glucose? b) Where do these substances come from? (a) To make amino acids
Define Categories of Indicators of Malnutrition? The indicators may fall under the following categories: 1. Macro indicators for sector-wide monitoring and evolution, 2.
According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos Islands? a. Finches dispersed
Why are the recombinant DNA technology and the nucleus transplantation technology still dangerous? The recombinant DNA technology and the nucleus transplantation technology (cl
Gastropods - Feeding and Digestion in Molluscs In several gastropods the digestion is extracellular. Though, some herbivore gastropods like Crepidula are ciliary feeders and h
Erythema: Erythema is one of the,commonest primary lesions of the skin. It is produced by the dilation of the cutaneous blood vessels. If the dilation is accompanied by
What are some fungal diseases transmitted by animal feces? Bat and pigeon feces can carry Histoplasma capsulatum, the fungus agent of histoplasmosis. The infection is transmitt
What are melanocytes? Melanocytes are epithelial cells of the skin particular in secretion of melanin. Melanin is a pigment that besides coloring the skin, the iris of the eye
what are floating plants? detailed information
Explain about the Dessicator? A dessicator is used to prevent an item from absorbing moisture. It is able to accomplish this because of a chemical, known as the dessicant, is h
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