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Soil-Environmental Components
The word soil is derived from Latin word 'solum' meaning earthy material in which plants grow. The soil is the consolidated outer layer of the earth's crust ranging in thickness from a mere film to three metres or more. It provides mechanical anchorage to plants, besides being a reservoir of water and plant nutrients. The soil also supports a rich and highly diversified micro-flora and fauna.
Typically, soil is a complex mixture of inorganic and organic materials. The inorganic materials, that is, the mineral constituents of soil are derived from parent material (the soil forming rocks) by fragmentation and weathering. The pore spaces formed between the mineral particles of soil are filled with water and gases. The organic components of soil comprise organic wastes, dead remains of plants and animals, and their decomposition products. Besides, a large variety of algae, bacteria, fungi and many small and large animals are invariably present in a fertile soil.
Antibody Structure: An antibody molecule consist of two alike light chains ( 220 amino acids each) ad two similar heavy chains (about 440-450 amino acids each) held together
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The formation of macro and micronuclei of daughter paramoeci: Each exconjugant has a single micronucleus and four macronuclei. This type of exconjugant divides twice and f
Differentiation is largely a matter of gene control and imprinting (CH3) plays a role, but ___ may also play a role.
Define Methods for Studying the Nutrient Requirements? 1) Population survey of nutrient intakes of healthy individuals is one method of estimating nutrient requirements. The av
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describe food procurement and digestion in ciliates.
What respectively are zygotic meiosis, gametic meiosis and sporic meiosis? Zygotic meiosis is the one that happens in the haplontic haplobiontic life cycle. Gametes from adult
How ecosyestem concept is useful to the study of environment?
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