The Cambrian explosion, also known as the Cambrian radiation, was an event that occurred approximately 541 million years ago. In the Cambrian period, most major animal phyla appeared in the fossil record. It lasted for about 13–25 million years and resulted in the divergence of most modern metazoan phyla. All the elements, everything that exists on this planet, is made of the same basic stuff as the one hundred or so elements. Living things are composed of only a few of them. When you return to the bare facts of life, life doesn’t need much. Life is made of four basic elements.

C - H - O - N

                  Carbon – Hydrogen – Oxygen – Nitrogen.

Okay, some sulfur and phosphorus, but this is life CHON, and those are the elements that contribute to the LAND, SEA, AIR, and the LIFE that we see on Earth. Elements and compounds are the beginning of life. How do we move from elements and compounds to a unit of living matter, namely a cell? The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the “Cambrian Explosion ” because of the relatively short time over which this diversity of forms appears. Before the Cambrian explosion, most organisms were simple, composed of individual cells occasionally organized into colonies. As the rate of diversification subsequently accelerated, the variety of life began to resemble that of today. Almost all present animal phyla appeared during this period.  

A CELL.

A cell is a fundamental unit of life, a sack of enzymes. The engine room of life. A microcosm of life itself. The process that turns organic compounds in a microcosmic cell is so convoluted that, as yet, nobody understands it completely.

D. N. A. The Physical Existence.

There is a section missing on the origin of life. Energy is the key to all these interactions; it’s the key to growth, it’s the flow of energy that creates life. The four elements with a bit of energy will create a compound called protein. A protein is a string of amino acids that are chemically very firmly locked together. It’s a very tough protein, a very tough compound. These proteins are made of sugars, phosphate, and the chemicals Adenine, Guanine, Thymine, Thymine