origin of all species?

I remember when I was in school I studied something named Oparin theory.( kinda general)

It has four steps

1 Origen of the universe and planet earth ( universe movements and centrifuge forces, made the chemicals elements distribute according to its weigh; heavy metals center, medium weigh surface, light elements gases outer layer forming a primitive atmosphere )

2 First non-organic chemical components( from a primitive atmosphere earth slowed down its rotation and starting cooling down too, which made possible massive precipitations that carried down elements from atmosphere ( O, H, S, C )

3 Formation of the first macromolecules ( the precipitations made possible the formation of primitive seas loaded with these simple compounds, and its consentration started increasing specially by the shores where the clay and sand helped to compact them and push them together. Energy from natural sources made these very close componenst ( See what you need for a reaction to occur) to react and from bigger molecules, these energy came from lightening volts, volcanoes...

4 Coacervation ( see wikipedia)

5 First cells

This is a theory nothing for sure, but step 2 was confirmed in a lab experiment, which is a huge step.

Hope it was helpfull

Well, let's start by mentioning that probably the best-known book in the history of science is "On the Origin of Species" by Charles Darwin ... but as this was written in the Victorian prose of the 1850's I don't recommend this as a good *starting* place (although everyone interested in biology should read it at least once in their lives).

Regarding the "first person", not only can we never know who this was, but there is *no such person*. That's a bit like referring to the "first English-speaker" ... a language (like a species) evolves *slowly* ... and refers to a *population*. Therefore, no single individual can be the "first."

Ditto the "first animal". For example, even today we group the porifera (sponges) and cnidaria (jellies, sea anemones, and corals) in the kingdom Animalia, but it would be hard to look at the first primitive coral or sponge and call it the "first animal".

In other words, be careful with drawing *boundaries* in nature (the "first" anything), because that is confusing the names we give things as *humans*, with some sort of "boundaries" that exist in nature. Nature usually doesn't have such clear boundaries where one thing "ends" and the next thing "begins."

But to answer your question ... the scientific community is pretty well settled on the idea that all species evolved from earlier species. (Note: always say "earlier" species, never "lower" species ... a phrase that doesn't really mean anything .) These species in turn evolved (changed) from earlier species, going as far back until the first evidence of single-celled life ... about 3.5 billion years ago.

What happened before that is not yet fully known ... that is as far back as the evidence for *evolution* takes us. Evolution does NOT claim to explain the origin of life itself ... as the word 'evolution' is about the process of change of living organisms (things that are reproducing more things) ... so as an explanation evolution does NOT explain what happens to non-living things.

According to the geologists, the earth is about 4.6 billion years old ... so that means that life somehow started in the first 1.1 billion years. We have *lots* of ideas of what happened in those first 1.1 billion years ... but it is premature to say we have a definitive theory (as we do with evolution).

But there are two things we *do* know, and it is really important to keep in mind.

1. It's important not to get caught up on a single species and think of its evolution as a long "chain". Instead remember that life is a massive *TREE* ... species splitting into more species, and then splitting again and again. Most of these branches have gone extinct. But the species we see *today* are the descendants of those branches that did not go extinct.

2. The closer we get to the modern day, the stronger the evidence is, and thus the more certain we are of how species evolved, and thus where they came from.

If you'd like to get an interesting perspective on the evolution of species, I'd recommend reading:

The Ancestor's Tale by Richard Dawkins

In terms of origin of the first "species", my thinking is that it was chemically step-by-step in the primordial "soup" until a primitive enclosure of self-reproducing molecules developed the ability to store and utilize energy. I'm still struggling with the concepts of the origin of energy/matter.

Well from a scientific point of view all we have is life evolved from unicellular organisms. Yet no one actually knows what it's was that put 'life' in these microorganisms.

That's about how much scientific progress we have made in regard to the origins of life on earth. Quite pathetic, I know.