When the drought ended and the rains returned, however, food was plentiful, and the average beak size returned to normal.
Common ancestry does not emerge from the inconsistent findings of molecular phylogenetics.
The abruptness seen in the Cambrian explosion can also be seen on smaller scales throughout the fossil record.
The spines of Australian echidnas and North American porcupines are remarkably similar.
No sane person believes that nothing changes over time, or that the cosmos, technology, and culture have no history.