The conditions of life are nearly the same, so that a multitude of European animals and plants have become naturalised in America and Australia; and some of the aboriginal plants are identically the same at these distant points of the northern and southern hemispheres?
Bizi-baldintzak ia berak dira, eta halatan, Europako animalia asko eta asko bertakotu egin dira Amerika eta Australian, eta ipar eta hego hemisferioko hain puntu urrunotan bertako landare batzuk berberak dira.