The nitrogen cycle is arguably the second most important cycle, after the carbon cycle, to living organisms. Nitrogen is essential to plant growth, and therefore is a significant contributor to the human food chain, but its presence in the environment is strongly influenced by anthropogenic ...
The nitrogen cycle is the system by which nitrogen is converted into different chemical forms, some usable to humans and animals and some not, as it circulates among the atmosphere, the land and the oceans. Encyclopaedia Britannica/Getty Images/HowStuffWorks Living things require nitrogen for ...
The Nitrogen Cycle is one of our planet's most important nutrient or biogeochemical cycles. Why? Because nitrogen is an essential building block of all the amino acids which make up proteins, and is a critical element of the nucleic acids, DNA and RNA. In short, without nitrogen life as ...
g. the NITROGEN CYCLE. 如果这种元素是生命活动必需的,那么这种循环就叫做营养循环,例如氮循环。 plb.snnu.edu.cn 3. The nitrogen cycle is destoyed. Nitrate has become one of the most common environmental pollution factors in many parts of the world. 其中硝酸盐已成为世界上许多地区地下水污染最普遍...
Processes In The Nitrogen Cycle The first process of the nitrogen cycle isnitrogen fixation. This is the process of converting atmospheric nitrogen into usable compounds like ammonia, nitrates, nitrites, etc. This is done via several activities. The energy generated during lightning causes oxygen and...
27.9: The Nitrogen Cycle Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be co...
The nitrogen forms many components like nucleic acids, proteins, amino acids etc. It is the inert gas and is the most abundant gas present in the atmosphere. It plays an important role in the fixation of nitrogen .They play a vital role in the formation of protoplasm. It is present in ...
The Ecology of the Nitrogen Cycle The aim of this book is to present a concise summary of the current situation with respect to nitrogen cycling research. There are two parts, general featu... JI Sprent - 《Quarterly Review of Biology》 被引量: 332发表: 1987年 Induction of ornithine-urea...
The nitrogen cycle單詞卡 學習 測試 配對 Nitrgen fixation 點擊卡片即可翻轉 👆 Nitrgem from the atmosphere is turned into a usable from by plants 點擊卡片即可翻轉 👆 1 / 5 建立者 Rumbidzai_Raymond 分享 學生們也學習了 學習指南 Lot Grading Standard 15個詞語 tygard預覽 Digital Marketing Chap...
nitrogen cycle n. The circulation of nitrogen in nature, consisting of a cycle of chemical reactions in which nitrogen from the atmosphere is fixed in compounds in soil or water, assimilated by plants and animals, released to the soil and water through decomposition, and returned to the atmosphe...