The periodic table is a chart created by scientists to organize the elements according to repeated changes of the properties.
<span>Pierre, Micaela, and Jon are friends, but Pierre and Micaela are much closer to each other than either of them is to Jon. According to the concept of Triadic Closure Jon might be a friend of either of them and became friend to the person at some point in time through other person.</span>
There is a lot there is websites specifically for historical facts if you want to look at those
The two countries located on the Iberian Peninsula include Spain and Portugal.
