Answer:
An element's location in the periodic table is largely dependent on its electrons; the number of valence shell electrons determines its group, and the type of orbital in which the valence electrons lie in determines the element's block.
Explanation:
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Our blood contains a large proportion of the iron in our bodies. Because women lose blood during a period, they also lose iron. This means that they need more iron in their diet to counteract this.
Most of it follows its cycle, going back to the atmosphere.
The image below, shows you how the nitrogen cycle is.
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