From eternity past, our cosmic thread [the electron] affected a cascade of events that produced a whole lot of stuff. All that negative environment generated a need for positive items [the proton] necessary to help stabilize and organize this cosmic thread into a useful structure [the atom]. This stuff needed more and more mass [the neutron] to build the multiple items [molecules] that formed the multiple elements [compounds] that produced the basic stuff of our very existence.
Now, all this basic stuff generated certain spheres of existence which came to be called "gases", "liquids", and "solids". Out of the "gases" came oxygen...out of the "liquids" came water...and finally out the "solids" came nutrients. Just think, if our organic platform is denied oxygen, it ceases to function after 5 minuets. If our organic platform is denied water, it will cease to function after 5 to 7 days. Lack of nutrients give our organic platform a little more time, shutting down things after some 30 to 40 days.
Hum... 5 minutes...to around one week...to around one month...some basic stuff that we are share. Common threads indeed they are.