Correct me if I get a detail wrong, Aman777, about your biblical interpretation:
There are many worlds that god has made.
At least 3 Universes or firmaments within our Multi-verse.
*** The world Noah lived in was not the world that we know and love, but a much smaller one.
Yes, since it had only 4 Rivers and was only 22.5 feet in elevation on the top of its highest mountains. Gen 7:20
*** When the flood occurred, it was dunked into a lake, and was utterly destroyed, with only the inhabitants of the ark surviving.
The solid firmament, which protected Adam's Earth, from the water which surrounded it Gen 1:6-8 was placed in Lake Van, Turkey sometime before 9k BC. When the windows on top were opened, the firmament sank in the Lake releasing the 450 ft long Ark into our world.
*** Noah and his family were of a perfect hominid race, but there were other prehistoric peoples in the world Noah and his family found themselves in. Thanks to interbreeding with these people, the successive generations were not as long lived as those previously, but they retained the intelligence granted to Noah and family by god.
Noah was a direct descendant of Adam who was made with an intelligence like God's Gen 3:22. Noah was the first Human to step foot on the present Earth. Adam lived and died on the world which was totally destroyed in the flood. ll Peter 3:6
*** These are the first "modern humans" as we understand them; hybrids between the people truly made in the image of god, (Adam) and animal species that resembled that one closely, such as Neanderthals, and the connection to Noah in our lineage is the reason why we are an intelligent species.
We INHERITED our superior intelligence from Adam was was the First and only living being made on the 3rd Day. Gen 2:4-7 Without his unique intelligence one cannot be a Human being. We also INHERITED our DNA and ERVs from the common ancestor of Apes, on this Planet, because Noah's grandsons had No other Humans to marry. Gen 6:4 Gen 10:8 They married prehistoric people who were already on planet Earth when the Ark arrived and produced the 7 Billion Humans (descendants of Adam) alive today.