I believe the answer would be Bill Gates. An appositive is a noun that renames a noun right beside it. In this case, "Bill Gates" is renaming "One of the richest men in the world."
The supporting details should be included in the Body Paragraphs of an essay. The introduction is an introduction of what you plan to write about, and the thesis is included in the introduction where you specifically mention your main topics/points. However you elaborate on these in the body paragraphs and these elaborations are your supporting details. The conclusion is a summary of your essay and should not be introducing any new information.
It should be a closed rhyme scheme.
The fishing trips take between one to two hours
