{"id":2539,"date":"2026-05-28T15:58:28","date_gmt":"2026-05-28T10:28:28","guid":{"rendered":"https:\/\/mymockmate.com\/notes\/?p=2539"},"modified":"2026-05-28T15:58:32","modified_gmt":"2026-05-28T10:28:32","slug":"ncert-class-9-science-earth-as-a-system-energy-matter-and-life-solutions","status":"publish","type":"post","link":"https:\/\/mymockmate.com\/notes\/ncert-class-9-science-earth-as-a-system-energy-matter-and-life-solutions\/","title":{"rendered":"NCERT Class 9 Science Earth as a System Energy Matter and Life Solutions"},"content":{"rendered":"<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2539?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\" \/><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">1<\/span><\/div>\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Short Intro<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">This chapter explains how Earth functions as an interconnected system involving energy flow, matter cycling, atmosphere, hydrosphere, lithosphere, and biosphere. Students learn about biogeochemical cycles, climate regulation, greenhouse gases, weather systems, and human impact on the environment through detailed explanations and solved questions.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Quick Information Box<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Topic<\/th><th>Details<\/th><\/tr><\/thead><tbody><tr><td>Chapter Name<\/td><td>Earth as a System: Energy, Matter, and Life<\/td><\/tr><tr><td>Class<\/td><td>Grade 9<\/td><\/tr><tr><td>Subject<\/td><td>Science<\/td><\/tr><tr><td>Main Topics<\/td><td>Earth Spheres, Climate, Biogeochemical Cycles<\/td><\/tr><tr><td>Energy Source<\/td><td>Sun<\/td><\/tr><tr><td>Important Cycles<\/td><td>Water, Carbon, Nitrogen, Oxygen<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Concepts Used (Topics Covered)<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Earth as an Interconnected System<\/li>\n\n\n\n<li>Atmosphere, Hydrosphere, Lithosphere and Biosphere<\/li>\n\n\n\n<li>Solar Radiation and Insolation<\/li>\n\n\n\n<li>Weather and Climate<\/li>\n\n\n\n<li>Wind Formation<\/li>\n\n\n\n<li>Ocean Currents<\/li>\n\n\n\n<li>Water Cycle<\/li>\n\n\n\n<li>Carbon Cycle<\/li>\n\n\n\n<li>Nitrogen Cycle<\/li>\n\n\n\n<li>Oxygen Cycle<\/li>\n\n\n\n<li>Greenhouse Effect<\/li>\n\n\n\n<li>Global Warming and Climate Change<\/li>\n\n\n\n<li>Eutrophication<\/li>\n\n\n\n<li>Deforestation<\/li>\n\n\n\n<li>Sustainable Development<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Important Formulas<\/h1>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Heat Transfer<br>Heat flows from hotter region to colder region.<\/li>\n\n\n\n<li>Greenhouse Effect<br>Earth absorbs solar radiation and re-radiates infrared radiation trapped by greenhouse gases.<\/li>\n\n\n\n<li>Water Cycle<br>Evaporation \u2192 Condensation \u2192 Precipitation \u2192 Runoff<\/li>\n\n\n\n<li>Photosynthesis Equation<br>CO\u2082 + H\u2082O + Sunlight \u2192 Glucose + O\u2082<\/li>\n\n\n\n<li>Respiration Equation<br>Glucose + O\u2082 \u2192 CO\u2082 + H\u2082O + Energy<\/li>\n<\/ol>\n\n\n\n<h1 class=\"wp-block-heading\">Questions &amp; Step-by-step Solutions with Explanation<\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q1. Role of Biogeochemical Cycles<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Question:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Choose the correct role of biogeochemical cycles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Options:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">(i) Provide food directly<br>(ii) Recycle nutrients between biotic and abiotic components<br>(iii) Create new elements<br>(iv) Remove pollutants<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Biogeochemical cycles continuously recycle nutrients through living and non-living systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">(ii) Recycle essential nutrients between biotic and abiotic components<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q2. Cause of Earth\u2019s Warming<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Question:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Which process mainly warms Earth?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Earth absorbs solar radiation and re-radiates heat energy which gets trapped by greenhouse gases.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">(iii) Earth\u2019s surface absorbs solar radiation which is trapped by greenhouse gases.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q3. Climate Change and Water Cycle<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Climate change affects evaporation, rainfall, and storms.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Examples:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Higher temperatures increase evaporation.<\/li>\n\n\n\n<li>Some regions experience floods.<\/li>\n\n\n\n<li>Other regions face droughts.<\/li>\n\n\n\n<li>Glaciers melt rapidly.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Climate change disturbs the balance of the water cycle.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q4. Effect of Albedo on Climate<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Albedo is the reflecting power of a surface.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ice and snow have high albedo and reflect sunlight.<\/li>\n\n\n\n<li>Dark surfaces absorb more heat.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Higher albedo lowers temperature while lower albedo increases warming.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q5. Mountain and Valley Breezes<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Valley Breeze:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">During day, mountain slopes heat quickly and warm air rises upward.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mountain Breeze:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">At night, mountain slopes cool rapidly and cool air flows downward.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Grass vs Rocky Mountain:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Grass-covered mountain remains cooler due to vegetation and moisture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rocky mountain heats faster and produces warmer breeze.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q6. Atmospheric Layer Responsible for Weather<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Most weather phenomena occur in the troposphere.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reason:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Contains most water vapour<\/li>\n\n\n\n<li>Uneven heating causes winds, rainfall and storms<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Troposphere<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q7. Nitrogen Cycle<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Main Steps:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Nitrogen fixation by bacteria<\/li>\n\n\n\n<li>Conversion into nitrates<\/li>\n\n\n\n<li>Absorption by plants<\/li>\n\n\n\n<li>Transfer to animals<\/li>\n\n\n\n<li>Decomposition<\/li>\n\n\n\n<li>Return to atmosphere<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">If Nitrogen Was Not Cycled:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plants could not make proteins.<\/li>\n\n\n\n<li>Food chains would collapse.<\/li>\n\n\n\n<li>Life would become impossible.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q8. Effects of Deforestation<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Deforestation reduces:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Photosynthesis<\/li>\n\n\n\n<li>Oxygen production<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It increases:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carbon dioxide concentration<\/li>\n\n\n\n<li>Global warming<\/li>\n\n\n\n<li>Soil erosion<\/li>\n\n\n\n<li>Biodiversity loss<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Deforestation disturbs oxygen and carbon cycles severely.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q9. Carbon Cycle Diagram Explanation<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Plants absorb CO\u2082 during photosynthesis.<\/li>\n\n\n\n<li>Animals eat plants.<\/li>\n\n\n\n<li>Respiration releases CO\u2082.<\/li>\n\n\n\n<li>Dead organisms decompose.<\/li>\n\n\n\n<li>Combustion of fuels releases CO\u2082 back into atmosphere.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q10. Why Excess CO\u2082 is Harmful<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Although plants need CO\u2082 for photosynthesis, excess CO\u2082 traps more heat in atmosphere.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This causes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Global warming<\/li>\n\n\n\n<li>Climate change<\/li>\n\n\n\n<li>Rising sea levels<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Excess CO\u2082 intensifies greenhouse effect.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q11. Heat Loss from Earth<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Earth loses heat by infrared radiation into space.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Significance:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This prevents Earth from becoming excessively hot and maintains thermal balance.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q12. If Earth Were Flat<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Solar radiation distribution would change greatly.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Equal day length would occur everywhere.<\/li>\n\n\n\n<li>Temperature variation between equator and poles would reduce.<\/li>\n\n\n\n<li>Climate patterns would differ significantly.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q13. Effect of Rising Atmospheric Temperature<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Cryosphere:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Melting glaciers and polar ice<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Hydrosphere:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rising sea level<\/li>\n\n\n\n<li>Increased evaporation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Biosphere:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Habitat destruction<\/li>\n\n\n\n<li>Species extinction<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q14. Importance of Atmosphere<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Atmosphere:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Traps suitable heat<\/li>\n\n\n\n<li>Blocks harmful radiation<\/li>\n\n\n\n<li>Maintains temperature balance<\/li>\n\n\n\n<li>Supports life processes<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Atmosphere makes Earth suitable for life.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Q15. Interrelationship Between Earth\u2019s Spheres<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Solution:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The four spheres interact continuously.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Example:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Water evaporates from oceans (hydrosphere)<\/li>\n\n\n\n<li>Forms clouds in atmosphere<\/li>\n\n\n\n<li>Falls on land (lithosphere)<\/li>\n\n\n\n<li>Supports plants and animals (biosphere)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This balance sustains life on Earth.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Common Mistakes<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confusing weather with climate<\/li>\n\n\n\n<li>Forgetting steps of biogeochemical cycles<\/li>\n\n\n\n<li>Mixing greenhouse effect with ozone depletion<\/li>\n\n\n\n<li>Ignoring role of atmosphere in heat balance<\/li>\n\n\n\n<li>Writing incomplete carbon cycle steps<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Exam Tips<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Learn all cycles using flow diagrams.<\/li>\n\n\n\n<li>Revise greenhouse effect carefully.<\/li>\n\n\n\n<li>Practice definitions of atmosphere layers.<\/li>\n\n\n\n<li>Draw labelled diagrams neatly.<\/li>\n\n\n\n<li>Remember causes and effects of climate change.<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Practice MCQs<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">1. Main source of Earth\u2019s energy:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Moon<br>B. Volcanoes<br>C. Sun<br>D. Oceans<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Sun<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. Weather phenomena mainly occur in:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Stratosphere<br>B. Mesosphere<br>C. Troposphere<br>D. Thermosphere<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Troposphere<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. Which gas mainly causes greenhouse effect?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Oxygen<br>B. Nitrogen<br>C. Carbon dioxide<br>D. Helium<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Carbon dioxide<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. Excess nutrients in water bodies cause:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Condensation<br>B. Eutrophication<br>C. Respiration<br>D. Weathering<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B. Eutrophication<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. Plants release oxygen during:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. Respiration<br>B. Combustion<br>C. Photosynthesis<br>D. Decomposition<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Photosynthesis<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">FAQ Section<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Q1. What are biogeochemical cycles?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">They are natural cycles that recycle matter between living and non-living components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q2. What is the greenhouse effect?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trapping of heat by greenhouse gases in atmosphere.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q3. What is eutrophication?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Excessive algal growth in water bodies due to nutrient pollution.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q4. Why is the atmosphere important?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It regulates temperature and supports life.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q5. What causes climate change?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mainly increased greenhouse gases from human activities.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Prepare smarter with chapter-wise notes, solved questions, MCQs, quizzes, and mock tests only on <a href=\"http:\/\/www.mymockmate.com\/\">www.mymockmate.com<\/a> and achieve excellent marks in Science exams!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2539?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\" ><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\" \/><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">1<\/span><\/div>\n    <div class=\"xs_social_share_widget xs_share_url after_content \t\tmain_content  wslu-style-1 wslu-share-box-shaped wslu-fill-colored wslu-none wslu-share-horizontal wslu-theme-font-no wslu-main_content\">\n\n\t\t\n        <ul>\n\t\t\t        <\/ul>\n    <\/div> \n","protected":false},"excerpt":{"rendered":"<p> 1 Short Intro This chapter explains how Earth functions as an interconnected system involving energy flow, matter<\/p>\n","protected":false},"author":3,"featured_media":2540,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[22,4,12],"tags":[1418,1414,1421,1416,1420,1419,1415,1413,1417],"class_list":["post-2539","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse","category-class-9","category-science","tag-biogeochemical-cycles","tag-carbon-cycle","tag-climate-change","tag-earth-system","tag-ecosystem","tag-greenhouse-effect","tag-nitrogen-cycle","tag-oxygen-cycle","tag-water-cycle"],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/comments?post=2539"}],"version-history":[{"count":2,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2539\/revisions"}],"predecessor-version":[{"id":2621,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2539\/revisions\/2621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media\/2540"}],"wp:attachment":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media?parent=2539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/categories?post=2539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/tags?post=2539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}