Answer:
bacteria is used by industries . Because some bacterias are very friendly
In the most basic way of putting it, bone deterioration. Where bones begin to break down because they don't have calcium to fortify themselves.
Im almost 100% sure the answer is the first one
You need to follow the atomic radius trend, the atomic radius decreases as you go across the period, and the atomic radius increases as you go down a group.
Between Sodium, Magnesium, Aluminum, silicon, and phosphorus, Sodium has the biggest atomic radius.
