{"id":9660,"date":"2018-02-13T12:49:07","date_gmt":"2018-02-13T07:19:07","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=9660"},"modified":"2018-03-19T11:44:43","modified_gmt":"2018-03-19T06:14:43","slug":"improvement-food-resources-class-9-notes-science","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/","title":{"rendered":"Improvement in Food Resources class 9 Notes Science"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/#CBSE_Guide_Improvement_in_Food_Resources_class_9_Notes\" >CBSE Guide Improvement in Food Resources class 9 Notes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/#9_Science_notes_Chapter_15_Improvement_in_Food_Resources\" >9 Science notes Chapter 15 Improvement in Food Resources<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/#Download_Revision_Notes_as_PDF\" >Download Revision Notes as PDF<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/#Improvement_in_Food_Resources_class_9_Notes\" >Improvement in Food Resources class 9 Notes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/#CBSE_Class-9_Revision_Notes_and_Key_Points\" >CBSE Class-9 Revision Notes and Key Points<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>CBSE class 9 Science Chapter 15 Improvement in Food Resources notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Improvement in Food Resources class 9 Notes latest chapter wise notes for quick preparation of CBSE exams and school based annual examinations. Class 9 Science notes on Chapter 15 Improvement in Food Resources are also available for download in CBSE Guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Guide_Improvement_in_Food_Resources_class_9_Notes\"><\/span>CBSE Guide Improvement in Food Resources class 9 Notes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CBSE guide notes are the comprehensive notes which covers the latest syllabus of CBSE and NCERT. It includes all the topics given in NCERT class 9 Science text book. Users can download CBSE guide quick revision notes from myCBSEguide mobile app and my CBSE guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"9_Science_notes_Chapter_15_Improvement_in_Food_Resources\"><\/span>9 Science notes Chapter 15 Improvement in Food Resources<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download CBSE class 9th revision notes for Chapter 15 Improvement in Food Resources in PDF format for free. Download revision notes for Improvement in Food Resources class 9 Notes and score high in exams. These are the Improvement in Food Resources class 9 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.<\/p>\n<h1 style=\"text-align: center\"><span class=\"ez-toc-section\" id=\"Download_Revision_Notes_as_PDF\"><\/span><strong><a href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-09-science\/1218\/cbse-revision-notes\/7\/\">Download Revision Notes as PDF<\/a><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p style=\"text-align: center\"><strong>CBSE Class 9 Science<br \/>\nRevision Notes<br \/>\nCHAPTER \u2013 15<br \/>\nImprovement in food resources<\/strong><\/p>\n<p>1<strong>. Food Resources:<\/strong> Cereals (Wheat, rice, maize, millets and sorghum) provide us carbohydrates; Pulses (Grams, pea and lentil) provide us proteins; Oil seeds (Soya bean, ground nut, sesame, and castor) provide us fats; Vegetables, spices and fruits provide us a range of minerals, nucleic acids and vitamins.<\/p>\n<p>In addition to these food crops, fodder crops like berseem, oats or sudan grass are raised as food for the livestock are called as fodder crops.<\/p>\n<p>2. The <strong>Kharif crops<\/strong>: The crops grown in rainy season are called as Kharif crops (Paddy, Soya bean, pigeon pea and maize). They are grown from June to October.<\/p>\n<p>3<strong>. The Rabi crops<\/strong>: The crops grown in winter season are called <strong>Rabi crops<\/strong> (Wheat, gram, peas, and mustard). They are grown November to April.<\/p>\n<p><strong>Compare Kharif crops and Rabi crops:<\/strong><\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td>SN<\/td>\n<td>Crop<\/td>\n<td>Season<\/td>\n<td>Example<\/td>\n<\/tr>\n<tr>\n<td>1.<\/td>\n<td>Kharif crops<\/td>\n<td>June to October ( Rainy Season)<\/td>\n<td>Paddy, Soya bean, and maize<\/td>\n<\/tr>\n<tr>\n<td>2.<\/td>\n<td>Rabi crops<\/td>\n<td>Nov. to April ( winter season)<\/td>\n<td>Wheat, gram, peas, and mustard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>4. <strong>The Green Revolution<\/strong>: Food supplies are generally as proteins, carbohydrates, fats, minerals, nucleic acids and vitamins in all living organisms. Indian population is growing enormously. Green Revolution is the need of the hour to increase food-grain production.<\/p>\n<p>5<strong>. Sustainable Practices<\/strong>: For sustained livelihood, one should undertake mixed farming, inter cropping, and integrated farming practices, for example, combining agriculture with livestock\/ poultry\/ fisheries\/bee-keeping. The major group of activities for improving crop yield can be classified as: Crop varietal improvement<strong>, Crop production improvement, Crop protection improvement <\/strong><\/p>\n<p><strong>6. The Crop varietal improvement: <\/strong><\/p>\n<p><strong>a) Hybridization<\/strong>: It refers to crossing between genetically dissimilar plants;It is all to get higher yield, improved quality, biotic and abiotic resistance, change in maturity duration, wider adaptability and desirable agronomic characteristics.<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td>SN<\/td>\n<td>Type<\/td>\n<td>Context<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Inter varietal Hybridization<\/td>\n<td>between different varieties<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Inter specific Hybridization<\/td>\n<td>between different species<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Inter generic Hybridization<\/td>\n<td>between different genera<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Genetically Modified Crops (GMC).<\/td>\n<td>Another way of improving the crop is by introducing a gene that would provide desired characteristic.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>7<strong>. The Crop production improvement<\/strong>: They include\u201d no cost production\u201d,\u201d low cost<strong> production<\/strong>\u201d or \u201c<strong>high cost production<\/strong>\u201d practices.<\/p>\n<ol>\n<li><strong>Nutrients (Sixteen elements are required for growth are called as essential elements Carbon, oxygen, hydrogen+ Macro nutrients &amp; Micronutrients. They increase the yield)<\/strong><\/li>\n<\/ol>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td>SNo.<\/td>\n<td>Macro nutrient<\/td>\n<td>Micro nutrient<\/td>\n<\/tr>\n<tr>\n<td>1.<\/td>\n<td>Six elements are required in larger quantity<\/td>\n<td>Other seven elements are required in small quantity<\/td>\n<\/tr>\n<tr>\n<td>2.<\/td>\n<td>Ex.Nitrogen, phosphorus, calcium, Potassium, magnesium, sulphur<\/td>\n<td>Ex. Iron, manganese, boron, zink, copper, molybdinum, chlorine<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ol>\n<li><strong>Manure &amp; Fertilizers: <\/strong><\/li>\n<\/ol>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td>SNo.<\/td>\n<td><strong>Manure<\/strong><\/td>\n<td><strong>Fertilizers<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Manure is prepared by the decomposition of animal excreta and plant waste is called as Humus. It decides the texture of the soil.<br \/>\nCompost: Farm waste, cow dung etc.<br \/>\nVermi compost: Compost prepared by using earthworms.<\/td>\n<td>Fertilizers are commercially produced plant nutrients.\u00a0Excess fertilizers destroy the soil fertility.<br \/>\nOrganic farming: No use of chemicals fertilizers, herbicides, pesticides etc.<br \/>\nCulturing blue green algae, neem leaves, healthy cropping systems.<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>It is cheap and prepared in rural homes and fields<\/td>\n<td>It is costly and is prepared in factories<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>It is voluminous and bulky<\/td>\n<td>It is compact and concentrated<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>It is inconvenient to store, transport, handle.<\/td>\n<td>It is easy to store, transport, handle.<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>It is not nutrient specific.<\/td>\n<td>It is nutrient specific and can provide specifically nitrogen, phosphorus etc.<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Add great humus to the soil<\/td>\n<td>Does not add humus to the soil.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>3. <strong>Irrigation:<\/strong> India has variety of water resources: Wells, canals, river lift system, tanks, rainwater harvesting, water shedding management to increase in ground water levels and to check the water flowing away to the sea. Planning to reduce soil erosion.<\/p>\n<p>4. <strong>Cropping patterns:<\/strong><\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td>S N.<\/td>\n<td>Mixed cropping<\/td>\n<td>Inter-cropping<\/td>\n<td>Crop rotation<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Two or more crops Grown simultaneously on the same piece of land<\/td>\n<td>Two or more crops grown simultaneously on the same piece &gt;of land in a definite pattern<\/td>\n<td>Growing different crops on a piece of land in a pre-planned succession<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Ex. Wheat+ Gram Wheat+ Mustard; Wheat+ gram; Groundnut+sunflower.<\/td>\n<td>Soyabean + maize\/bajra + Cowpea<\/td>\n<td>Two or three crops can be grown in a year depending upon the duration.<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>A type of insurance against failure of one of the crops.<\/td>\n<td>A few rows of one crop alternate with a few rows of a second crop. Crops are selected such that their nutrient requirements are different. This ensures the maximum utilization of the nutrients supplied and prevents pests and diseases spreading in the crop field<\/td>\n<td>The availability of moisture and Irrigation facilities decides the choice of the crop to be cultivated.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>8. Crop protection improvement\/ management: Field crops are infested by large number of weeds, insects pests, diseases &amp; storage of grains<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\n<tbody>\n<tr>\n<td><strong>SN.<\/strong><\/td>\n<td><strong>Weeds<\/strong><\/td>\n<td><strong>Insect pests<\/strong><\/td>\n<td><strong>Diseases<\/strong><\/td>\n<td><strong>Storage of grains<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Weeds are unwanted plants in the crop field<\/td>\n<td>Insect pest is nuisance in the crop field<\/td>\n<td>Disease is caused by pathogens in the field<\/td>\n<td>Different factors are responsible.<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Weeds take up nutrients and reduce the growth<\/td>\n<td>Insect pest affect the health of crop and reduce the yield.<\/td>\n<td>Diseases alter the physiology of crops and reduce the yield<\/td>\n<td>Different factors reduce the quality of stored grains<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Ex. Xanthium, Parthenium<\/td>\n<td>Ex. Caterpillars, dragonfly<\/td>\n<td>Ex. Bacteria, Virus<\/td>\n<td>Botic factors: insects, rodents, fungi Abiotic factors: moisture &amp; temperature<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Removal of weeds at an early stage is recommended.<\/p>\n<p>Spray weedicides<\/td>\n<td>Spread of chemicals such as pesticides<\/td>\n<td>Spread of chemicals to kill pathogens<\/td>\n<td>Systematic management of ware house.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>9. <strong>Animal Husbandry<\/strong>: It is a scientific management of animal livestock, includes feeding, breeding and diseases control. Animal-based farming includes cattle farming, Poultry farming, fish farming, and bee Keeping.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Improvement_in_Food_Resources_class_9_Notes\"><\/span>Improvement in Food Resources class 9 Notes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>CBSE Revision notes (PDF Download) Free<\/li>\n<li>CBSE Revision notes for Class 9 Science PDF<\/li>\n<li>CBSE Revision notes Class 9 Science \u2013 CBSE<\/li>\n<li>CBSE Revisions notes and Key Points Class 9 Science<\/li>\n<li>Summary of the NCERT books all chapters in Science class 9<\/li>\n<li>Short notes for CBSE class 9th Science<\/li>\n<li>Key notes and chapter summary of Science class 9<\/li>\n<li>Quick revision notes for CBSE exams<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Class-9_Revision_Notes_and_Key_Points\"><\/span><strong>CBSE Class-9 Revision Notes and Key Points<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Improvement in Food Resources class 9 Notes. CBSE quick revision note for Class-9 Science, Chemistry, Maths, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-09-mathematics\/1234\/cbse-revision-notes\/7\/\">Revision Notes for class-09 Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-09-science\/1218\/cbse-revision-notes\/7\/\">Revision Notes for class-09 Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-09-social-science\/1895\/cbse-revision-notes\/7\/\">Revision Notes for class-09 Social Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-09-english-communicative\/1900\/cbse-revision-notes\/7\/\">Revision Notes for class-09 English Communicative<\/a><\/li>\n<\/ul>\n<p>To download Improvement in Food Resources class 9 Notes, sample paper for class 9 Mathematics, Social Science, Science, English Communicative; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n<ul>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/matter-surrounding-class-9-notes-science\/\">Matter in Our Surrounding class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/matter-around-us-pure-class-9-notes-science\/\">Is Matter around Us Pure class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/atoms-molecules-class-9-notes-science\/\">Atoms and Molecules class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/structure-atoms-class-9-notes-science\/\">Structure of the Atoms class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/fundamental-unit-life-class-9-notes-science\/\">The Fundamental Unit of Life class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/tissues-class-9-notes-science\/\">Tissues class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/diversity-living-organisms-class-9-notes-science\/\">Diversity in Living Organisms class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/motion-class-9-notes-science\/\">Motion class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/forces-laws-motion-class-9-notes-science\/\">Forces and Laws of Motion class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/gravitation-class-9-notes-science\/\">Gravitation class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/work-energy-class-9-notes-science\/\">Work and Energy class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/sound-class-9-notes-science\/\">Sound class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/fall-ill-class-9-notes-science\/\">Why Do We Fall ill class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/natural-resources-class-9-notes-science\/\">Natural Resources class 9 Notes Science<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/\">Improvement in Food Resources class 9 Notes Science<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CBSE class 9 Science Chapter 15 Improvement in Food Resources notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Improvement in Food Resources class 9 Notes latest chapter wise notes for quick preparation of CBSE exams and school based annual examinations. Class 9 Science &#8230; <a title=\"Improvement in Food Resources class 9 Notes Science\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/improvement-food-resources-class-9-notes-science\/\" aria-label=\"More on Improvement in Food Resources class 9 Notes Science\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":9574,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45,456],"tags":[457,150,679,426,240],"class_list":["post-9660","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse-class-09","category-revision-notes","tag-cbse-notes","tag-cbse-notes-and-key-points","tag-improvement-in-food-resources","tag-quick-revision","tag-quick-revision-notes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Improvement in Food Resources class 9 Notes Science | myCBSEguide<\/title>\n<meta name=\"description\" content=\"Improvement in Food Resources class 9 Notes Social Science chapter 15 in PDF format for free download. 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