The original questions are reproduced, along with her responses in italics, and my commentary in regular type. She also asked me five questions of her own, which I have attempted to answer.
Genesis is the book of beginnings.
The purpose of the Bible is to define man's relationship to God, not the history of the earth and its life forms. There is some of the earth history which comes into play, of course, but very little is said about biology apart from man's interaction with it, and even that is quite sparse. It is not the job of Genesis to provide the sort of biological information you are asking for. Instead, Genesis provides the basis for every major doctrine found in the rest of the Bible. It is the foundation on which everything else sits.