The difference is,scientists can give a precise predictions regarding the origins of humans,and the predictions are constantly being corrected when more evidence are unearthed,which means sooner or later the truth will be unveiled,this is something religions can not offer,it's entirely faith based and you have no choice but to accept whatever you've been instilled regardless of validity...
i don't know where did you get the source saying 90% of scientists believe in god,but the claim is not consistent with the data collected by some surveys,and here's one of them... http://www.stephenjaygould.org/ctrl/news/file002.html
and what if anyone can't name a human(s) who lived more than 120 years?does it prove the bible is true?NO,you can substitute whatever you like to explain this but that does not make it a fact...

as for the race i have no idea...
but how they're sinned can be inferred from the following bible's verse - Romans 5:12 Why, as by one man sin entered into the world, and death by sin; and so death passed on all men, for that all have sinned: simply put,they inherit the sins of Adam...