Just for clarity here are the nine simple challenges from the OP. Nine ways in which the claims of christianity just seem unlikely.
1 - The brutal competition for survival
2 - Mass extinctions
3 - "Nature red in tooth and claw"
4 - Lack of clear bible prophecy
5 - The complete ordinariness of the bible
6 - The moral failings of scripture
7 - The credulity that is required to believe in miracles
8 - An earth perfectly designed to randomly kill millions of its inhabitants
9 - The confirmation bias that is required to believe in answered prayer
I wonder what else we could add to this list.