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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.
Energy Cycle of Living Being Source of energy :All matter locks energy in the from of bonds between component molecules and atoms. This energy is the chemical ener
explain in brief about phyletic lineage?
control of microorganisms by chemical method.
Roots have no chlorophyll and grow in darkness. So how do roots obtain their food? Food made in the leaves is transported to the roots in the phloem of the vascular bundles.
Define Advantages of membrane filtration technique? (i) Both total and viable counts can be obtained. (ii) Specific microorganisms can be selected by using special media.
Explain about the Lactation Process? Lactation is a physiologic process which has profound relevance for both the mother and the newborn. It is the period following pregnancy w
Explain the Basal Metabolic Rate? The Basal Metabolic Rate (BMR) gradually decreases after the attainment of maturity due to a decrease in muscle mass tissues and physical acti
Carbohydrate characteristic chemical features include: Select one: a. the potential to form multiple hydrogen bonds. b. the existence of one or more asymmetric centers.
Adrenal glands There are two adrenal glands one each on the top of each kidney. Adrenal gland has two parts, the outer cortex and inner medulla. Both cortex and medull
When air humidity is high does the plant transpiration increase or lower? When air humidity is high transpiration diminishes. As transpiration is a simple diffusion process it
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