{"id":10360,"date":"2018-02-17T11:50:27","date_gmt":"2018-02-17T06:20:27","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=10360"},"modified":"2019-02-02T16:57:35","modified_gmt":"2019-02-02T11:27:35","slug":"life-earth-class-11-notes-geography","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/life-earth-class-11-notes-geography\/","title":{"rendered":"Life on the Earth Class 11 Notes Geography"},"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' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/life-earth-class-11-notes-geography\/#Life_on_the_Earth_class_11_Notes_Geography\" >Life on the Earth class 11 Notes Geography<\/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\/life-earth-class-11-notes-geography\/#CBSE_Class_9_Revision_Notes_Geography_Life_on_the_Earth\" >CBSE Class 9 Revision Notes Geography Life on the Earth<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/life-earth-class-11-notes-geography\/#LIFE_ON_THE_EARTH\" >LIFE ON THE EARTH<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/life-earth-class-11-notes-geography\/#CBSE_Class_11_Revision_Notes_and_Key_Points\" >CBSE Class 11 Revision Notes and Key Points<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Biodiversity and Conservation class 11 Notes<\/strong> Geography in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides \u00a0\u00a0Life on the Earth class 11 Notes Geography latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. Class 11 Geography notes on Chapter 15 \u00a0\u00a0Life on the Earth class 11 Notes Geography are also available for download in CBSE Guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Life_on_the_Earth_class_11_Notes_Geography\"><\/span><strong>Life on the Earth class 11 Notes Geography<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download CBSE class 11th revision notes for Chapter 15\u00a0 Life on the Earth class 11 Notes Geography in PDF format for free. Download revision notes for \u00a0\u00a0Life on the Earth class 11 Notes Geography and score high in exams. These are the \u00a0\u00a0Life on the Earth class 11 Notes Geography 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<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-11-biology\/1388\/cbse-revision-notes\/7\/\">Download Revision Notes as PDF<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Class_9_Revision_Notes_Geography_Life_on_the_Earth\"><\/span><strong>CBSE Class 9 Revision Notes Geography Life on the Earth<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This unit deals with<br \/>\n\u2022 Biosphere \u2014 Importance Of Plants And Other Organisms;<br \/>\n\u2022 Ecosystems,<br \/>\n\u2022 Bio-Geo Chemical Cycle And Ecological Balance;<br \/>\n\u2022 Biodiversity And Conservation<\/p>\n<h3><span class=\"ez-toc-section\" id=\"LIFE_ON_THE_EARTH\"><\/span><strong>LIFE ON THE EARTH<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Living organisms of the earth, constituting the biosphere, interact with other environmental realms. The biosphere includes all the living components of the earth. It consists of all plants and animals, including all the micro- organisms that live on the planet earth and their interactions with the surrounding environment.<br \/>\nOrganisms exist on the lithosphere, the hydrosphere as well as in the atmosphere.<br \/>\nThe biosphere and its components are very significant elements of the environment. These elements interact with other components of the natural landscape such as land, water, and soil. They are also influenced by the atmospheric elements such as the temperature, rainfall, moisture, and sunlight.<br \/>\n<img loading=\"lazy\" decoding=\"async\" id=\"Picture 8\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/11\/geog\/ch15\/image001.jpg\" alt=\"Life on the Earth Class 11 Notes Geography\" width=\"364\" height=\"272\" \/><br \/>\nThe interactions of biosphere with laid, air and water are important to the growth, development and evolution of the organism. The interaction of a particular group of organism with abotic factors within a particular habitat resulting in clearly defined energy flows and material cycles on land, water and air, are called ecological systems.<br \/>\nThe term ecology is derived from the Greek word \u2018oikos\u2019 meaning \u2018house\u2019, combined with the word \u2018logy\u2019 meaning the \u2018science of\u2019 or \u2018the study of \u2019. Literally, ecology is the study of the earth as a \u2018household\u2019, of plants, human beings, animals and micro\u00adorganisms. They all live together as interdependent components. A German zoologist Ernst Haeckel, who used the term as \u2018oekologie\u2019 in 1869, became the first person to use the term \u2018ecology\u2019. The study of interactions between life forms (biotic) and the physical environment (abiotic) is the science of ecology. Hence, ecology can be defined as a scientific study of the interactions of organisms with their physical environment and with each other.<br \/>\nA habitat in the ecological sense is the totality of the physical and chemical factors that constitute the general environment.<\/p>\n<p><strong>A system consisting of biotic and abiotic components is known as ecosystem.<\/strong><br \/>\nDifferent types of ecosystems exist with varying ranges of environmental conditions where various plants and animal species have got adapted through evolution. This phenomenon is known as ecological adaptation.<br \/>\n<strong>Type of Ecosystems<\/strong><br \/>\n<img loading=\"lazy\" decoding=\"async\" id=\"Picture 3\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/11\/geog\/ch15\/image002.jpg\" alt=\"Life on the Earth Class 11 Notes Geography\" width=\"602\" height=\"268\" \/><br \/>\nEcosystems are of two major types:<br \/>\nTerrestrial and aquatic. Terrestrial ecosystem can be further be classified into \u2018biomes\u2019.<br \/>\nA biome <strong>is a plant and animal community that covers a large geographical area.<\/strong><br \/>\nThe boundaries of different biomes on land are determined mainly by climate.<br \/>\nA biome can be defined as the total assemblage of plant and animal species interacting within specific conditions.<br \/>\nThese include rainfall, temperature, humidity and soil conditions.<br \/>\nSome of the major biomes of the world are: forest, grassland, desert and tundra biomes.<br \/>\nAquatic ecosystems can be classed as marine and freshwater ecosystems. Marine ecosystem includes the oceans, estuaries and coral reefs. Freshwater ecosystem includes lakes, ponds, streams, marshes and bogs.<\/p>\n<p><strong>Structure and Functions of Ecosystems<\/strong><br \/>\nThe structure of an ecosystem involves a description of the available plant and animal species. From a structural point of view, all ecosystems consist of abiotic and biotic factors.<br \/>\nAbiotic factors include rainfall, temperature, sunlight, atmospheric humidity, soil conditions, inorganic substances (carbon dioxide, water, nitrogen, calcium, phosphorus, potassium, etc.).<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/11\/geog\/ch15\/image003.jpg\" alt=\"Life on the Earth Class 11 Notes Geography\" width=\"354\" height=\"234\" \/><br \/>\nBiotic factors include the producers, the consumers (primary, secondary, tertiary) and the decomposers. The producers include all the green plants, which manufacture their own food through photosynthesis.<br \/>\nThe primary consumers include herbivorous animals like deer, goats, mice and all plant-eating animals.<br \/>\nThe carnivores include all the flesh-eating animals like snakes, tigers and lions. Certain carnivores that feed also on carnivores are known as top carnivores like hawks and mongooses. Decomposers are those that feed on dead organisms (for example, scavengers like vultures and crows), and further breaking down of the dead matter by other decomposing agents like bacteria and various microorganisms.<br \/>\nFurther, the secondary consumers are consumed by the tertiary consumers.<br \/>\nThe decomposers feed on the dead at each and every level. They change them into various substances such as nutrients, organic and inorganic salts essential for soil fertility.<br \/>\nThis sequence of eating and being eaten and the resultant transfer of energy from one level to another is known as the food chain.<br \/>\nTransfer of energy that occurs during the process of a food chain from one level to another is known as flow of energy.<br \/>\nThis interconnecting network of species is known as food web.<br \/>\nThere are two types of food-chains are recognized: grazing food-chain and detritus food-chain.<br \/>\nThere is a loss of energy at each level which may be through respiration, excretion or decomposition.<br \/>\nThe levels involved in a food chain range between three to five and energy is lost at each level.<br \/>\nA detritus food-chain is based on autotrophs energy capture initiated by grazing animals and involves the decomposition or breaking down of organic wastes and dead matter derived from the grazing food-chain.<\/p>\n<p><strong>Types of Biomes<\/strong><br \/>\nThere are five major biomes &#8211;<br \/>\n<strong>1. forest,<br \/>\n2. Desert,<br \/>\n3. grassland,<br \/>\n4. aquatic and<br \/>\n5. altitudinal biomes<\/strong><\/p>\n<p><strong>Biogeochemical Cycles<\/strong><br \/>\nThe sun is the basic source of energy on which all life depends. This energy initiates life processes in the biosphere through photosynthesis, the main source of food and energy for green plants. During photosynthesis, carbon dioxide is converted into organic compounds and oxygen. Out of the total solar insolation that reaches the earth\u2019s surface, only a very small fraction (0.1 percent) is fixed in photosynthesis. More than half is used for plant respiration and the remaining part is temporarily stored or is shifted to other portions of the plant.<br \/>\nThis balance of the chemical elements is maintained by a cyclic passage through the tissues of plants and animals. The cycle starts by absorbing the chemical elements by the organism and is returned to the air, water, and soil through decomposition. These cycles are largely energized by solar insolation. These cyclic movements of chemical elements of the biosphere between the organism and the environment are referred to as biogeochemical cycles.<br \/>\nBio refers to living organisms and geo to rocks, soil, air and water of the earth.<br \/>\nThere are two types of biogeochemical cycles: the gaseous and the sedimentary cycle.<br \/>\nIn the gaseous cycle, the main reservoir of nutrients is the atmosphere and the ocean. In the sedimentary cycle, the main reservoir is the soil and the sedimentary and other rocks of the earth\u2019s crust.<\/p>\n<p><strong>The Carbon Cycle Figure 15.2: Carbon Cycle<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"Picture 4\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/11\/geog\/ch15\/image004.jpg\" alt=\"Life on the Earth Class 11 Notes Geography\" width=\"457\" height=\"259\" \/><\/p>\n<p>Carbon is one of the basic elements of all living organisms. It forms the basic constituent of all the organic compounds. The biosphere contains over half a million carbon compounds in them. The carbon cycle is mainly the conversion of carbon dioxide. This conversion is initiated by the fixation of carbon dioxide from the atmosphere through photosynthesis.<br \/>\n<strong>The Oxygen Cycle <\/strong>Oxygen is the main by\u00adproduct of photosynthesis. It is involved in the oxidation of carbohydrates with the release of energy, carbon dioxide and water. The cycling of oxygen is a highly complex process.<br \/>\n<strong>Oxygen <\/strong>occurs in a number of chemical forms and combinations. It combines with nitrogen to form nitrates and with many other minerals and elements to form various oxides such as the iron oxide, aluminum oxide and others. Much of oxygen is produced from the decomposition of water molecules by sunlight during photosynthesis and is released in the atmosphere through transpiration and respiration processes of plants.<br \/>\n<img loading=\"lazy\" decoding=\"async\" id=\"Picture 5\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/11\/geog\/ch15\/image005.jpg\" alt=\"Life on the Earth Class 11 Notes Geography\" width=\"425\" height=\"279\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" id=\"Picture 6\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/revise\/11\/geog\/ch15\/image006.jpg\" alt=\"Life on the Earth Class 11 Notes Geography\" width=\"533\" height=\"193\" \/><\/p>\n<p><strong>The Nitrogen Cycle<\/strong><br \/>\nNitrogen is a major constituent of the atmosphere comprising about seventy-nine percent of the atmospheric gases.<br \/>\nIt is also an essential constituent of different organic compounds such as the amino acids, nucleic acids, proteins, vitamins and pigments.<br \/>\nOnly a few types of organisms like certain species of soil bacteria and blue-green algae are capable of utilising it directly in its gaseous form.<br \/>\nGenerally, nitrogen is usable only after it is fixed. Ninety percent of fixed nitrogen is biological.<br \/>\nThe principal source of free nitrogen is the action of soil micro-organisms and associated plant roots on atmospheric nitrogen found in pore spaces of the soil. Nitrogen canal so be fixed in the atmosphere by lightning and cosmic radiation. In the oceans, some marine animals can fix it. After atmospheric nitrogen has been fixed into an available form, green plants can assimilate it. Herbivorous animals feeding on plants, in turn, consume some of it. Dead plants and animals, excretion of nitrogenous wastes are converted into nitrites by the action of bacteria present in the soil. Some bacteria can even convert nitrites into nitrates that can be used again by green plants. There are still other types of bacteria capable of converting nitrates into free nitrogen, a process known as denitrification Other Mineral Cycles<br \/>\n1. phosphorus, 2 sulphur, 3. calcium 4. potassium cycles<br \/>\n2. They usually occur as salts dissolved in soil water or lakes, streams and seas. All living organisms fulfill their mineral requirements from mineral solutions in their environments.<br \/>\n3. Other animals receive their mineral needs from the plants and animals they consume.<br \/>\n4. After the death of living organisms, the minerals are returned to the soil and water through decomposition and flow.<\/p>\n<p><strong>Ecological Balance<\/strong><br \/>\n1. Ecological balance is a state of dynamic equilibrium within a community of organisms in a habitat or ecosystem.<br \/>\n2. It can happen when the diversity of the living organisms remains relatively stable.<br \/>\n3. Gradual changes do take place but that happens only through natural succession.<br \/>\n4. It can also be explained as a stable balance in the numbers of each species in an ecosystem.<br \/>\n5. This occurs through competition and cooperation between different organisms where population remains stable.<br \/>\n6. This balance is brought about by the fact that certain species compete with one another determined by the environment in which they grow.<br \/>\n7. This balance is also attained by the fact that some species depend on others for their food and sustenance.<br \/>\n8. Such accounts are encountered in vast grasslands where the herbivorous animals (deer, zebras, buffaloes, etc.) are found in plenty.<\/p>\n<p><strong>Ecological balance may be disturbed due to<\/strong><br \/>\n1. the introduction of new species,<br \/>\n2. natural hazards or human causes.<br \/>\n3. Human pressure on the earth\u2019s resources has put a heavy toll on the ecosystem.<br \/>\n4. This has destroyed its originality and has caused adverse effects to the general environment. Ecological imbalances have brought many natural calamities like floods, landslides, diseases, erratic climatic occurrences, etc<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Class_11_Revision_Notes_and_Key_Points\"><\/span><strong>CBSE Class 11 Revision Notes and Key Points<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Life on the Earth class 11 Notes Geography. CBSE quick revision note for class-11 Mathematics, Physics, Chemistry, 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-11-physics\/1340\/cbse-revision-notes\/7\/\">Physics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-chemistry\/1356\/cbse-revision-notes\/7\/\">Chemistry<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-mathematics\/1371\/cbse-revision-notes\/7\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-biology\/1388\/cbse-revision-notes\/7\/\">Biology<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-accountancy\/1411\/cbse-revision-notes\/7\/\">Accountancy<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-economics\/1423\/cbse-revision-notes\/7\/\">Economics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-business-studies\/1740\/cbse-revision-notes\/7\/\">Business Studies<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-computer-science\/1852\/cbse-revision-notes\/7\/\">Computer Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-informatics-practices\/1874\/cbse-revision-notes\/7\/\">Informatics Practices<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-11-geography\/1864\/cbse-revision-notes\/7\/\">Geography<\/a><\/li>\n<\/ul>\n<p>To download \u00a0Life on the Earth class 11 Notes Geography, sample paper for class 11 Chemistry, Physics, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies and Home Science; 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\/india-location-class-11-notes-geography\/\">India \u2013 Location class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/structure-physiography-class-11-notes-geography\/\">Structure and Physiography class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/drainage-system-class-11-notes-geography\/\">Drainage System class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/climate-class-11-notes-geography\/\">Climate Vegetations and Soil class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/natural-vegetation-class-11-notes-geography\/\">Natural Vegetation class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/soils-class-11-notes-geography\/\">Soils class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/geography-discipline-class-11-notes-geography\/\">Geography as a Discipline class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/interior-earth-class-11-notes-geography\/\">Interior of the Earth class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/distribution-oceans-continent-class-11-notes-geography\/\">Distribution of Oceans and Continent class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/minerals-rocks-class-11-notes-geography\/\">Minerals and Rocks class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/geomorphic-processes-class-11-notes-geography\/\">Geomorphic Processes class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/landforms-evolution-class-11-notes-geography\/\">Landforms and their Evolution class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/solar-radiation-heat-balance-temperature-class-11-notes-geography\/\">Solar Radiation, Heat Balance and Temperature class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/10322-2\/\">Atmospheric Circulation and Weather System class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/water-atmosphere-class-11-notes-geography\/\">Water in the Atmosphere class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/world-climate-climate-change-class-11-notes-geography\/\">World Climate and Climate Change class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/water-oceans-class-11-notes-geography\/\">Water oceans class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/movements-ocean-water-class-11-notes-geography\/\">Movements of Ocean Water class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/life-earth-class-11-notes-geography\/\">Life on the Earth class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/biodiversity-conservation-class-11-notes-geography\/\">Biodiversity and Conservation class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/natural-hazards-disasters-class-11-notes-geography\/\">Natural Hazards and Disasters class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/origin-evolution-earth-class-11-notes-geography-2\/\">The Origin and Evolution of the Earth class 11 Notes Geography<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/climate-class-11-notes-geography-2\/\">Climate class 11 Notes Geography<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Biodiversity and Conservation class 11 Notes Geography in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides \u00a0\u00a0Life on the Earth class 11 Notes Geography latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. Class 11 Geography notes on Chapter 15 &#8230; <a title=\"Life on the Earth Class 11 Notes Geography\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/life-earth-class-11-notes-geography\/\" aria-label=\"More on Life on the Earth Class 11 Notes Geography\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":10165,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47,456],"tags":[457,150,1541,853,925,426,240],"class_list":["post-10360","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse-class-11","category-revision-notes","tag-cbse-notes","tag-cbse-notes-and-key-points","tag-cbse-revision-notes","tag-geography-notes","tag-life-on-the-earth","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>Life on the Earth Class 11 Notes Geography | myCBSEguide<\/title>\n<meta name=\"description\" content=\"Life on the Earth class 11 Notes Geography Chapter 15 in PDF format for free download. 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