OK - just ‘all the land animals and plants’ except for one boatload of animals whose fur and hair most likely held some of the seeds for plant regeneration (i.e. any of those plants alive today that could not withstand upto 1 year under water anyways).
I’ve spent over 30 years studying what science says and what the Bible says. Only one source does not change and is also irrefutable imho. If you study these link I provided then you begin to see the worldview that aligns with the God of Truth Justice and the only Way.
You do know that carbon 14 is generated in the upper atmosphere at a known rate, and decays over time at a known rate, don’t you?
You also do know that carbon 14 dating is based on the ratio of carbon 14 to carbon 12, and if you suck (or bury) a whole bunch of carbon out of the system, the ratio of the remainder doesn’t change in the slightest.
That vast amounts of carbon were buried doesn’t change anything with regards to carbon 14 dating, any more than shooting 99% of the population at random would change the ratio of surviving males and females.
I assume you also know that tree ring dating, which uses the width of growth rings, which in turn varies year by year depending on weather and climate, and produces year-related patterns as distinctive as fingerprints, shows unbroken overlapping patterns of rings going back tens of thousands of years, don’t you?