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Date: 2019-09-15 Page is: DBtxt001.php L0700-CS-NC-E-Nitrogen-Cycle

NATURAL CAPITAL / ECOSYSTEM
Nitrogen Cycle

TO DO ... update images to be more relevant to the subject matter

THE NITROGEN CYCLE

The Nitrogen Cycle
Schematic representation of the flow of nitrogen through the land environment. The importance of bacteria in the cycle is immediately recognized as being a key element in the cycle, providing different forms of nitrogen compounds assimilable by higher organisms
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is nitrogen,[1] making it the largest source of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems.
The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition. Human activities such as fossil fuel combustion, use of artificial nitrogen fertilizers, and release of nitrogen in wastewater have dramatically altered the global nitrogen cycle.[2][3]
The Nitrogen Cycle
From Wikipedia : https://en.wikipedia.org/wiki/Nitrogen_cycle
Open external link
Slideset about the Nitrogen Cycle Open S0500-MDIA-p3-06-NITROGEN-CYCLE-150420



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