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Q. What is the cost-benefit relationship regarding sewage treatment as a strategy to fight water pollution?
To treat sewage is greatly cheaper for society. The non-treated sewage pollutes lakes, rivers and the sea being a cause of diseases transmitted through water. For the society the costs of these diseases are lot higher than the cost of the sewage treatment.
One of the major economical systems to treat sewage is the aerobic treatment system, reservoirs kept much oxygenated for aerobic bacteria to decompose organic material.
Substances which are insoluble in a membrane are carried across membrane with concentration gradient by means of a carrier molecule in a process termed as: a) Diffusion. b)
DEMOGRAPHIC CYCLE - 1 . First stage - B high - D high = 0 2 . Second stage - B high - D lo w = G more eg.
Minerals :- Magnesium Food Source Whole grains, nuts, legumes, green leafy vegetables Nutritional Functional role Essential nutrient: Deficiency is rare Co
How can denaturizing be classified regarding its reversibility? Ans) Protein denaturizing can be a reversible or irreversible process, i.e., it can be possible or impossible to
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INTRODUCTIO N - Karl Von Baer - Coined the term cleavage. Swammerdom - First time seen cleavage. Prevost and Dumas - Reported cleavage of frog's egg. Spllanzani - Detail
The kind of epithelium which forms the inner walls of blood vessels is : 1. cuboidal epithelium 2. columnar epithelium 3. ciliated columnar epithelium 4. squamous epith
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