This flora extends from Ireland to the Canaries and reappears on the highlands of Angola.
The olive and the chestnut are rare; but the beech reappears, and the Pinus pinaster recalls the Italian pines.
The absence of Coregoni is a characteristic feature of the fish-fauna of the steppes; the carp, on the contrary, reappears, and the rivers abound in sturgeon (Acipenseridae).
The arrested prophetic movement of Jeremiah and Deutero-Isaiah reappears in John the Baptist and Jesus after an interval of more than five centuries.
It is well known that if energy disappears in one form it reappears in another, and this principle applied to the sun will explain the famous difficulty.