We are on the same train i dont know either
Ok that’s easy airplanes or cars durrrrr
As soon as the white blood cells detect an unknown cell (the pathogen) they produce antibodies or they engulf them, i dont know if this will help but I hope this does :)
Answer:
Lystrosaurus was found on multiple continents and couldn't swim. So, it is likely that instead if the dinosaur swimming to other continents the continents instead split.
