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The textbook breaks down the vast subject of ecology into manageable, structured units: 1. Basic Ecological Principles Concepts of ecosystems, production, and decomposition. Biogeochemical cycles (Carbon, Nitrogen, Phosphorus). Homeostasis and ecological succession. 2. Population and Community Ecology
: Detailed sections on climatic, topographic, and edaphic (soil) factors.
This section examines energy flow through trophic levels, food chains, and food webs. It provides detailed explanations of biogeochemical cycles, including the carbon, nitrogen, phosphorous, and water cycles, emphasizing how human activities disrupt these natural balances. 3. Community and Population Ecology
It systematically covers core ecological principles, ecosystem dynamics, biodiversity, environmental pollution, climate change, and global conservation efforts.
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The text meticulously covers the curricula of major Indian universities and the Union Public Service Commission (UPSC) environmental syllabus.
: Check your institutional digital library (like National Digital Library of India). The textbook breaks down the vast subject of
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Evaluation of habitat fragmentation, invasive species, and anthropogenic pressures. Homeostasis and ecological succession
The value of "Ecology and Environment" lies in its systematic and logical progression through topics. The book begins with the fundamentals of ecology before moving into more applied areas of environmental science.
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PD Sharma is a veteran author in the field of biosciences. His approach combines deep ecological principles with practical environmental issues, making it ideal for both undergraduate students and those preparing for civil services exams like the UPSC in India. 1. Comprehensive Content Coverage