Paryavaran evam Paristhitiki Tantra (पर्यावरण एवं पारिस्थितिकी तंत्र), written by Sunil Sir and Vikas Gupta Sir and published by Ceramic Academy, covers environment and ecosystem for competitive examinations. The complete book is written in Hindi (Devanagari script), so aspirants preparing in the Hindi medium can study the subject in their own language. The cover states that the book follows the latest pattern (नवीनतम पैटर्न के अनुसार), carries a chapter-wise compilation of previous year questions (अध्यायवार PYQ का संकलन), and is useful for all competitive examinations (सभी प्रतियोगी परीक्षाओं हेतु उपयोगी). Environment questions sit across several sections of a paper — ecology and biodiversity, pollution and climate change, conservation law, protected areas and international conventions — and rarely get a chapter of their own in a general studies volume. A subject book arranged chapter-wise with past questions attached gives that ground the weight it actually carries in the paper. Key Features: Written entirely in Hindi (Hindi medium) for competitive examination aspirants Complete environment and ecosystem in one volume As per the latest examination pattern Chapter-wise compilation of previous year questions Useful for all competitive examinations For RPSC, RSSB and other competitive examinations By Sunil Sir and Vikas Gupta Sir, published by Ceramic Academy यह पुस्तक "पर्यावरण एवं पारिस्थितिकी तंत्र" सुनील सर एवं विकास गुप्ता सर द्वारा लिखित है तथा सिरेमिक एकेडमी द्वारा प्रकाशित है। यह पूर्णतः हिंदी भाषा (Hindi medium) में है। यह नवीनतम पैटर्न के अनुसार है तथा इसमें अध्यायवार PYQ का संकलन दिया गया है। यह RPSC, RSSB तथा अन्य सभी प्रतियोगी परीक्षाओं के अभ्यर्थियों के लिए अत्यंत उपयोगी है।