Why did cow's, self evolve into good tasting food with no defense?

To answer the C part of your question: Scientists have all sorts of theories as to how life came about. Not one has ever been demonstrated empirically. The truth is that scientists are still confused as to how the first living cell came about.

There are many conjectures and disagreements between themselves. Under the heading "abiogenesis", Wikepedia says the following: "There is no "standard model" of the origin of life. Most currently accepted models draw at least some elements from the framework laid out by the Oparin-Haldane hypothesis.

Under that umbrella, however, are a wide array of disparate discoveries and conjectures." Each person should decide for themselves what they will believe in. Nevertheless, all scientific evidence to date indicates that physical life on earth can come only from previously existing life.

To believe that even a “simple” living cell arose by chance from nonliving chemicals requires a huge leap of faith. In 2008, Professor of Biology Alexandre Meinesz stated that over the last 50 years, “no empirical evidence supports the hypotheses of the spontaneous appearance of life on Earth from nothing but a molecular soup, and no significant advance in scientific knowledge leads in this direction.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.