Suchergebnisse

"There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish--and then around again!"--

"Life on Earth depends on carbon. In fact, about 18.5 percent of a human body's mass is carbon! How carbon is taking in and given off through animals' breathing, the burning of fossil fuels, and more can be shown in the model known as the carbon cycle. Though this concept can be confusing, all readers have a chance to understand this concept through the text and simple diagrams in this book! Both struggling readers and those looking for review can find the most important components and vocabulary of the carbon cycle in low-level, accessible text."--

Every living thing needs nitrogen -- What is the nitrogen cycle? -- Nitrogen fixation -- The marine nitrogen cycle -- Nitrification and denitrification -- Nitrogen assimilation and ammonification -- Man-made fertilizer -- Problems caused by overuse of fertilizers -- Crop rotation improves soil naturally -- Acid rain -- Nitrogen is an important element

Contents: American expansion and industrial stability. bv H. S. Dennison; Business man and the business cycle, by C. H. Crennan.