I think he's asking for an explicit definition of 'kind'. Is it equivalent to a genus, a family, an order? Is the order
Carnivora a kind, or were each of the modern families (
Stenoplesictidae,
Percrocutidae,
Hyaenidae, etc) represented on the Ark?
I have also wondered how the surviving animals recovered from the severe genetic bottlenecking: the genetic diversity among animals suggests no such bottlenecking occurred ~4000 years ago. Indeed, the human Y-chromosome (all of which is supposedly descended from Noah) shows far greater variation than Genesis seems to imply.
Other problems include:
- How did hive organisms survive? Bees, wasps, ants, termites, etc, all live in colonies (i.e., a structure & a large population) that would not survive a year long flood.
- If Noah took infants on the Ark, how did they learn the behaviour necessary to survive? Cranes, for instance, learn their famous dance from the flock; if there was noone to learn from, why do modern Cranes dance?
- How did cheetahs mate, since the female requires being chased for several miles by several males before she ovulates?
- How did ring species know where to go to look exactly like they had evolved round a large geographic area (Larus gulls, for instance, or Ensatina salamanders)?
- How did corals survive being submerged to such enormous depths and pressures (not to mention the lack of light)?
- Where did turtles go when it was time to lay their eggs?
- How did hummingbirds eat their own weight in nectar daily?
- How did the Spotted hyenas survive, given that one in ten mothers die, and first-borns are suffocated*?
And this is just behavioural attributes; what about the evidence that no global flood has occurred on Earth, either c.2000BCE or otherwise? Why has human civilisation continued unperturbed around that apparently uneventful date (the city of Damascus, for instance, has been continually occupied since c.6000BCE)?