Redirected from 520 BC
Decades: 570s BC - 560s BC - 550s BC - 540s BC - 530s BC - 520s BC - 510s BC - 500s BC - 490s BC - 480s BC - 470s BC
Significant People
... dioxide plus water plus light (energy) yields oxygen plus sugar. In animal bodies, this is exactly reversed: oxygen plus sugar yields carbon dioxide plus water plus ...