[GGpaX4DumpedTea]

I read somewhere, that there was a higher level of oxygen before the flood that would have contributed to longer lifespans.

There is some evidence that there was an ice canopy covering the earth, some distance up. The theory is that this ice canopy was shattered by a 'fly-by' such as an asteroid. As the ice fell it melted and produced the rain that was responsible for the flood. The canopy would explain the higher oxygen content, maybe exceeding 30%. the air trapped in pieces of amber has been analyzed and found to be in this range.

[castlegreyskull]

I never heard that one. Makes sense to me.

That is the problem with non-believers, they cannot imagine the World and its atmosphere different than it is now. They will say something like, we only live to about 100 years old at the most, but the Bible says people lived 900 years, therefore it is fake.