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518

Centuries: 5th century - 6th century - 7th century

Decades: 460s - 470s - 480s - 490s - 500s - 510s - 520s - 530s - 540s - 550s - 560s

Years: 513 514 515 516 517 518 519 520 521 522 523


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Photosynthesis

... different pathways, cyclic or non-cyclic. Cyclic photophosphorylation In cyclic electron flow, the electron originates in a pigment complex called photosystem I, ...

 
 
 
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