Just a few questions...

There really aren't any difficulties in the questions you raise. Let me take just one example: The oldest plants were pollinated by wind blown pollen. There are still many wind pollinated plants around today.What happened is called co-evolution. The plants and the insects evolved together. Some insects fed on flowers, and accidently carried pollen. The plants evolved to make use of this, both by making the flowers more attractive to insects, and by making their pollen sticky so that the would better attach to the insects. There were then further successive stages of co-evolution.Your question seems to be based on the assumption that the different things evolved independently, one before the other. But, for most of your questions, there was a co-evolution of several things.For your RNA/DNA question, I'm not sure if a certain answer is known. Some biologists believe that RNA based systems evolved first, and the DNA mechanism evolved later. (I'm not a biologist. Somebody will correct me if I have that wrong).For your lung question, the first creatures with lungs were aquatic. The lungs gave them additional ways to get oxygen. I'm not sure about your idea of "perfect mixture of gases". The creatures evolved to be able to make use of the atmosphere that was available.The answers to your other questions are similar. For the moment, I will leave them for you to think about.

Hmm, I probably misspoke on that. There are underwater plants, and unless we consider the water currents to be wind, those were not wind pollenated.I should have said that wind pollenated plants preceded insect pollinated plants.Responding to my comment on co-evolution, TheLiteralist wrote: Here is a link about this. As far as I know, those would be lungfish. I'm a computer scientist, not a paleontologist, so I could easily be mistaken there.

Again, keep in mind that I'm a computer scientist and mathematician, not a paleontologist.What I had in mind when I wrote that comment (on wind pollenation), was that the gymnosperms (includes conifers) were earlier than the angiosperms (flowering plants, some of which are insect pollenated). Just about any book on plants, including gardening books, will tell you that the gymnosperms are older. That's my understanding.

Thanks for the comment. I hadn't meant to suggest that modern lungfish were amphibian predecessors. I agree with your point.

It's known from the fossil record. The gymnosperms are present in earlier (lower) layers, before the angiosperm fossils show up.I seen that nuggin has given some details in Message 38 (my thanks to nuggin).