Textbook in PDF format This book covers a wide range of topics such as role of microorganisms in the global carbon cycle, the impact of climate change on microbial communities, and the feedback mechanism between them. Microorganisms produce and consume greenhouse gases to transform essential elements, such as carbon and nitrogen, to form their cellular components. Microorganisms are also involved in nitrogen and phosphorus cycling, which are essential for plant growth and productivity. Thus, the role of microbial communities in agroecosystems with biogeochemical cycles is imperative for addressing the current global warming situation