good examples. the whole "earth created in 7 days" theory is fraught with ambiguity and contradiction. Remember like i said no one was around to witness the creation of earth (in a "right it down and take a picture of it" sense) so how do we know what happened precisely?
re: the eating of meat thing in Genesis: not sure but i do know that prior to the floods of noah we (humans) were told not to eat meat but then after the floods had washed the vegetation away we were told by god that we could eat meat.
re divorce: the bible spans a period of many thousands of years (3500?) not just the era of Christ, and laws were made, then changed, to suit that era of man. Originally we lived by mosaic law (an eye for an eye etc - there are many sites on the internet explaining mosaic law, google "mosaic law") where the killing of man was sanctioned in certain cases, whereas the ten commandments written much later, said "thou shall not kill"