Transcription of Chapter 9 Chapter 10 - NCERT
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Chapter 9 Chapter 10 - NCERT
Chapter 8 Human Health and DiseaseChapter 9 Strategies for Enhancement inFood ProductionChapter 10 Microbes in Human WelfareBiology is the youngest of the formalised disciplines of naturalscience. Progress in physics and chemistry proceeded muchfaster than in Biology. Applications of physics and chemistry inour daily life also have a higher visibility than those of , twentieth century and certainly twenty-first centuryhas demonstrated the utility of biological knowledge infurthering human welfare, be it in health sector or discovery of antibiotics, and synthetic plant-derived drugs,anaesthetics have changed medical practice on one handand human health on the other hand. Life expectancy ofhuman beings have dramatically changed over the practices, food processing and diagnostics havebrought socio-cultural changes in human communities.
infectious agents are transmitted through food and water such as typhoid, amoebiasis and ascariasis. In cases of air-borne diseases such as pneumonia and common cold, in addition to the above measures, close ±
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