Summations Only

The key portion in both quotes is "from generation to generation." The changes do not take place in individual organisms after they are born. The changes are between one generation and the next.

No, you are completely wrong.You asked a specific question: what happens if an environment changes and the population hasn't time to move somewhere else. In that case, the population dies. This has in fact happened in the past, we can find evidence for it. But each time that has happened, other populations were able to survive, and thrive in the new environment.The history of life on the earth is dominated by extinction. Millions of species have gone extinct. In every case, however, other species moved in. There are massive amounts of evidence to show that this took place. This extinction of one species doesn't necessarily lead to the extinction of another species.If the environment of the entire planet were to change in such a way that no life could survive, it would become a dead planet. That obviously hasn't happened.

There are several questions there, and I'm not sure I understand them all. But I strongly suspect you are not understanding my point.The doggies do not live in the middle of an otherwise lifeless desert. There are thousands of other species in the environment as well. If all the doggies go extinct, that will open up opportunities for other organisms to thrive. Perhaps doggies were competing with wolfies for food. With doggies gone, wolfies may increase. Perhaps doggies were eating kitties. Since fewer kitties are being eaten, they may see a population increase.Any species going extinct will change the competitive balance of the enviroment that the species inhabited.

You need to explain why you think natural selection cannot result in the creation of new species instead of simply saying so.

It's quite clear you have no idea what you are talking about.First, we've told you countless times, organisms don't evolve, populations do. This is not simply a matter of semantics. This is basic. If you don't understand this fact, and I believe you do not, you will never understand anything.Second, yes, sometimes a population can move in response to environmental changes. But sometimes the population evolves. If you believe this is not so, you need to explain why.Third, evolution is a form of adaptation.