We

We are all a more closely related than you think. Historically the traditional way to view how life developed on earth has been via something called a Phylogenetic Tree (see image to the right). The tree shows various steps of life becoming more complicated. The tree illustrates how all life once was one thing and charts in steps how then we evolved into other things. At its most basic, this process can be seen to the right. Every proceeding step is another level of complexity.

But at a certain stage a clever monkey once asked "where did the root come from?". It is thought that life started from simple inorganic molecules, which interacted to make other molecules which could replicate themselves. After this it was just a matter of millions of years (a blink of an eye in earth's history) before more complicated organic replicants came to being.

Once the earliest life was created it took another 3.5 billion years for it to make us. Whilst the stepped classification is useful as it gives specific delineation for scientific study, in fact the process is much more fluid. Similar to the roots of a tree branching out, although many stems are produced it is still the same macro organism.