We have two main bronchi in your right and left lungs that divide and branch off into smaller segments, like tree branches. At the end of your bronchi, the alveoli exchange oxygen and carbon dioxide.There are 300 million alveoli in (each) lung.
I smell an argument from complexity / incredulity in the making.
Who designed and made the lungs, that we need to breathe in our first breath, in the first second of life? We all need complete lungs, bloodstream, heart, nervous system and brain and many other vital organs In the first second of life, even 10 minutes later, would be too long waiting!
"who" = loaded question.
And the answer is not a "who". It's a "what". And that what is the process of evolution.
God loved everyone so very much before we were even born, and continues to love us.
Your preaching is noted, but irrelevant.
Even after a billion years would cream and sugar ever get into your coffee cup all by itself? No!
False analogy
Don't you think for a person to begin to believe in evolution, they must first believe, that each step happens all by itself.
I don't "believe" in evolution any more then I "believe" in gravity or how a river cuts through soil to create a canyon.
Instead, I accept it as the best explanation accounting for all the available evidence and capable of predicting additional evidence.
Humans can build a robotic assembly line to make automobiles, and all kinds of things get done all by themselves, because a human with intelligence designed and built the robotic assembly line.
Robotic assembly lines aren't self-reproducing entities that replicate with variation that are in a struggle for survival.
False analogy again.
Evolution does not give credit to anyone being responsible for designing or making anything, every bit of it happens all by itself!
Because it's not required. There is no evidence for any "entity" at the steering wheel and there is no need for it.
Think about it if there was only one organ first the heart, would the heart survive, waiting for the bloodstream to evolve? Would not all the vital organs need to exist all at the same exact time for each organ's survival? The lungs, bloodstream, heart, nervous system, brain and other vital organs all need to be present, all at the same time in order for any of the organs to survive the next few hours!
Evolution is a gradual process. Your comment here exposes a vast ignorance on how it works. So vast, that I don't even know where to begin to correct the many errors you managed to pack into a single sentence. Your entire comment is in the category of "not even wrong".
Because evolution is gradual, there is no such thing as "half a lung" or "half a heart" or "half a brain". There are no crockoducks in evolution.
You also seem unaware of the many states of "being" in biology.
What if a few vital organs were formed, but either the bloodstream, the brain and the lungs had not evolved yet, how many hours would the first few organs survive?
It doesn't work that way.
Without all the vital organs fully formed at the same time? That's why they are called vital organs, all the vital organs must be fully complete, and working properly in order for any of the organs to survive! And what else is needed for life to continue to exist?
Go compare an octopus to a human in terms of "organs".
Mammals aren't the only species alive.
Evolution is gradual. All systems evolve simultanously.
There is no such thing as "half a creature". Every stage of evolution is a "complete organism" in its own right.
A good analogy to understand this is the development of language.
The ancestors of spanish speaking folk spoke latin.
There is however no such thing as "half-spanish".
Every generation between latin and spanish spoke a "complete language".
Micro-changes over generations occurred. Slowly and
gradually changing latin into modern-day spanish.