5 ms·

Some people believe in interspecies evolution, but not between different species.

• sigzero 9y ago
  Correct, "of the same kind". The birds didn't become another species say "bird -> bat".
  • whatshisface 9y ago
    If all I had was a cell slurry I'd hardly be able to tell the difference. Where does one kind end and the other begin? Maybe the kind of earth is DNA-based with left-chiral protiens and right-chiral metabolism.
  • rf15 9y ago
    there was a time when birds and bats were hard to distinguish in the sense that both their ancestors were first one, then very closely related, and now very distinct and separate. And it's hard to tell where to draw the line in this process of separation.