A2 Biology - Nitrogen cycle (OCR A Chapter 23.3)
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The nitrogen cycle shows how
The nitrogen cycle shows how nitrogen (in the forms of ammonium ions/ammonia, nitrite ions and nitrate ions) is recycled within the ecosystem. As nitrogen is needed to make amine groups to make amino acids (which make up proteins), in a way we can see how energy is transferred through an ecosystem.
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Background music:
Eternal Hope by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/...)
Source: http://incompetech.com/music/royalty-...
Artist: http://incompetech.com/
6 سال پیش
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