Of course they aren't, as the entire story is a myth that wasn't thought through at any level by the people who wrote it (who had no knowledge of the diversity of species anyway). They didn't think about the practicality of 8 people looking after a world's ecosystem in a 450ft wooden boat with one opening 2ft square in the top deck. They didn't think about what everyone would eat when they disembarked. They didn't know that there would be no topsoil (requires live earthworms) for decades, or what the predators would eat the moment they disembarked etc etc etc
I note you haven't explained how marsupials got back to Australia, or knew how to go back there, or how they survived on Antarctica.
Non-answer gobbledegook about light-speed noted.
Stuff about irrelevant ICR experiments
None of the stuff that you mention explains the phenomena that are seen in real strata in the real world, like interposed fully-formed fossil coral beds, like fossilised burrows, like thick layers of powdery material where the powder is so fine that the grains take years to fall onto the sediment, Like interposed igneous strata, coal formations, like radiometric dates that get steadily and consistently older the deeper down the column we go etc etc etc.
And none of this contradicts the Mosaic account. your point, please? As for Antarctica, is there any proof those fossils couldn't have arrived there during the flood?