# Ecology and Environment Cracking IAS General Studies Prelims by Disha for UPSC Civil Services 5th Edition > UPSC environment and ecology guide with biodiversity, climate change and PYQ practice. ## Details - **Author:** Disha Experts - **Publisher:** Disha Publication - **Language:** English - **Edition:** 5th Edition - **Year:** 2024 - **Pages:** 560 - **ISBN:** 9789355649898 - **File Size:** 1.7 MB - **Difficulty:** intermediate - **Price:** Free - **URL:** https://www.allcompetitionclasses.co.in/books/ecology-environment-cracking-ias-prelims-disha ## Exam Relevance - UPSC Civil Services Examination - State PSC Exams - RAS - UPPSC - BPSC - MPPSC - HPSC - UKPSC - SSC CGL - SSC CHSL - CDS - CAPF - NDA - Railway Exams - Forest Services Examination - Government Recruitment Exams ## Subjects & Topics - Ecology - Environment - Biodiversity - Climate Change - Environmental Science - Wildlife Conservation - Environmental Laws - Sustainable Development - Competitive Exam Prep - UPSC Preparation - Environment and Ecology ## Tags #ecology and environment upsc pdf #disha environment book pdf #environment cracking ias prelims #upsc ecology prelims book #biodiversity notes upsc #climate change upsc pdf #environment mcq upsc #disha publication environment #wildlife conservation upsc #ramsar sites notes pdf #environment current affairs upsc #ecology objective questions pdf #environment and ecology notes #upsc environment english book #state pcs environment book #national parks and biosphere reserves #environment conventions upsc #species in news upsc #disha ias environment 5th edition #environment preparation for prelims ## Full Description Environment and Ecology has become one of the most important sections in UPSC prelims during the last few years. Earlier, students treated it like a small part connected only with biology or geography, but now UPSC asks direct as well as analytical questions from biodiversity, climate change, international conventions, species conservation, pollution control, and environmental governance. Many aspirants struggle because the subject keeps overlapping with current affairs, science, geography, and government policies all at once. Ecology and Environment Cracking IAS General Studies Prelims by Disha is designed to make this subject manageable for UPSC aspirants. Instead of presenting environment as purely academic theory, the book explains concepts in an exam-oriented style connected with current developments and previous UPSC trends. It helps students build both conceptual clarity and factual awareness, which is exactly what prelims now demands. The 5th edition has been updated according to recent UPSC patterns where ecology and environment questions are increasingly linked with climate change reports, international organizations, protected species, sustainability initiatives, renewable energy, and environmental legislation. The book combines theory, current affairs integration, diagrams, MCQs, and previous year prelims questions in a structured format. The book begins with the basics of Ecology including ecosystem structure and functions, food chains, food webs, ecological pyramids, energy flow, ecological succession, biotic and abiotic factors, ecological balance, and ecosystem productivity. These concepts form the foundation for understanding many advanced environmental topics asked in UPSC. Biodiversity is one of the strongest sections covered in detail. Topics include genetic diversity, species diversity, ecosystem diversity, biodiversity hotspots, endemic species, endangered species, keystone species, and conservation strategies. Special focus is given to Indian biodiversity because UPSC frequently asks questions related to species, habitats, biosphere reserves, and conservation projects. Protected areas and wildlife conservation chapters explain national parks, wildlife sanctuaries, biosphere reserves, conservation reserves, community reserves, tiger reserves, elephant reserves, Ramsar sites, and important international conservation programs. Species-specific conservation projects and endangered flora and fauna are also discussed because these are frequent UPSC prelims topics. Climate Change is another major area covered in the book. Topics include global warming, greenhouse gases, ozone depletion, carbon cycle, climate negotiations, carbon credits, renewable energy, sustainable development, and international environmental conventions. Agreements such as the Kyoto Protocol, Paris Agreement, Montreal Protocol, UNFCCC, Convention on Biological Diversity, and Ramsar Convention are explained in a simplified and exam-focused manner. Pollution and Environmental Degradation chapters discuss air pollution, water pollution, soil pollution, noise pollution, thermal pollution, radioactive pollution, waste management, e-waste, plastic waste, and environmental impact assessment. Government initiatives and environmental regulatory frameworks are also included. Environmental Governance and Legislation sections explain important Indian environmental laws including the Environment Protection Act, Wildlife Protection Act, Forest Conservation Act, Biological Diversity Act, National Green Tribunal, and pollution control boards. UPSC often asks indirect questions related to institutions, acts, and environmental governance systems. The book also covers Disaster Management and Environmental Hazards including floods, droughts, earthquakes, cyclones, landslides, tsunamis, forest fires, and mitigation strategies. Since environment and disaster management increasingly overlap in UPSC preparation, these chapters become highly relevant. Renewable Energy and Sustainable Development topics include solar energy, wind energy, hydropower, biofuels, green hydrogen, sustainable agriculture, carbon neutrality, and environmental sustainability models. Modern prelims papers frequently include questions linked with renewable technologies and sustainable development goals. Another useful part of the book is the integration of current environmental developments with static concepts. Topics connected with COP summits, environmental reports, endangered species in news, climate initiatives, and sustainability programs are presented in a way that helps students connect current affairs with core ecology concepts. The chapter-wise MCQs and previous year UPSC prelims questions are extremely useful because environment questions in UPSC are often statement-based and elimination-oriented. Many aspirants know the facts but struggle with application-based options. PYQ practice helps students understand how UPSC frames conceptual environment questions. The book uses diagrams, species tables, ecological charts, environmental cycles, and summary-based notes to make revision easier. Since environment preparation requires repeated revision of species, conventions, acts, and concepts, visual presentation helps in long-term retention. This book is mainly designed for UPSC Civil Services Examination aspirants preparing for General Studies Paper 1 prelims. Beginners who find ecology difficult can use it to build concepts gradually, while intermediate-level aspirants can use it mainly for revision and MCQ practice. Apart from UPSC, the content is useful for State PSC examinations including RAS, UPPSC, BPSC, MPPSC, HPSC, UKPSC, and other state civil services exams where environment and ecology have strong weightage. It is also relevant for SSC CGL, SSC CHSL, CDS, CAPF, NDA, Railway exams, Forest Services examinations, and several government recruitment exams where environmental awareness questions are included. Students preparing for teaching eligibility tests and environmental studies-related exams may also find selected sections useful, especially topics connected with biodiversity, climate change, and conservation. Disha Publication is already well known among competitive exam aspirants in India for producing exam-oriented preparation books for UPSC, SSC, banking, defence, railway, and teaching exams. Their Cracking IAS series is particularly popular because it combines concise theory with objective practice and previous year analysis. The material is prepared by Disha Experts, a team of educators and subject specialists who regularly track UPSC trends and update content accordingly. Their books are often preferred by aspirants looking for revision-friendly resources instead of extremely bulky reference material. If you study mainly on your phone or tablet, downloading a mobile-friendly PDF version of this book makes environment preparation much easier. Ecology requires repeated revision of species names, conventions, protected areas, environmental laws, and current affairs updates. A compressed PDF loads faster, uses less storage space, and helps students revise topics anytime during travel, coaching breaks, or mock test sessions. Searchable digital format also becomes useful when you want to quickly revise topics like Ramsar Sites, biodiversity hotspots, greenhouse gases, tiger reserves, or climate agreements without manually searching through hundreds of pages. Another practical advantage is sectional revision. Many students revise biodiversity separately, conventions separately, and climate change topics closer to prelims. PDF format supports that kind of flexible preparation. Environment and Ecology may initially feel memory-heavy, but once the concepts become clear, the subject starts connecting naturally with current affairs, geography, economy, and science. UPSC generally rewards students who understand ecological relationships instead of memorizing isolated facts. If your target is UPSC or State PCS prelims, this book can provide a strong foundation for both static ecology and current environmental developments. Read concepts slowly, revise important species and conventions regularly, connect environmental issues with current affairs, and solve previous year questions seriously. That consistent revision cycle matters much more than trying to collect too many environment sources together. Once you build clarity in ecology, environment questions become far less confusing and much more scoring in prelims. --- - **URL:** https://www.allcompetitionclasses.co.in/books/ecology-environment-cracking-ias-prelims-disha [Download / View Book](https://www.allcompetitionclasses.co.in/books/ecology-environment-cracking-ias-prelims-disha) [Browse All Books](https://www.allcompetitionclasses.co.in/books)