Nitrogen Cycle
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Nitrogen bebas dapat ditambat difiksasi terutama oleh tumbuhan yang berbintil akar misalnya jenis polongan dan beberapa jenis ganggang.
Nitrogen cycle. Donate or volunteer today. Khan academy is a 501 c 3 nonprofit organization. Our mission is to provide a free world class education to anyone anywhere. Nitrogen cycle definition nitrogen cycle is a biogeochemical process which transforms the inert nitrogen present in the atmosphere to a more usable form for living organisms furthermore nitrogen is a key nutrient element for plants.
Nitrogen a component of proteins and nucleic acids is essential to life on earth. Nitrogen is required for all organisms to live and grow because it is the essential component of dna rna and protein. Since the mid 1900s humans have been exerting an ever increasing impact on the global nitrogen cycle. The nitrogen cycle refers to the cycle of nitrogen atoms through the living and non living systems of earth.
Important processes in the nitrogen cycle include fixation ammonification nitrification and denitrification. Although 78 percent of the atmosphere is nitrogen gas this gas is unusable by most organisms until it is made available by a series of microbial transformations. Nitrogen hadir di lingkungan dalam berbagai bentuk kimia termasuk nitrogen organik amonium nh4 nitrit no2 nitrat no3 dan gas nitrogen n2. Nitrogen bebas juga dapat bereaksi dengan hidrogen atau oksigen dengan bantuan kilat petir.
However the abundant nitrogen in the atmosphere cannot be used directly by plants or animals. The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere terrestrial and marine ecosystems the conversion of nitrogen can be carried out through both biological and physical processes. The uniqueness of the nitrogen cycle is that nitrogen is the most abundant gas in the earth s atmosphere about 78 of all air but it can t be directly utilized by the animals and plants unless it is converted into. Nitrogen organik dapat berupa organisme hidup atau humus dan dalam produk antara dekomposisi bahan organik atau humus dibangun.
The nitrogen cycle explains the how nitrogen flows between animals bacteria plants the atmosphere and the soil on earth. Biology is brought to you with support from the amgen foundation. The nitrogen cycle is the set of biogeochemical processes by which nitrogen undergoes chemical reactions changes form and moves through difference reservoirs on earth including living organisms. Biology is brought to you with support from the.
The nitrogen cycle is vital for life on earth. Tumbuhan memperoleh nitrogen dari dalam tanah berupa amonia nh3 ion nitrit n02 dan ion nitrat n03.