Noah's Ark And Number Of Animals
The above explanation by brother Saad is perfect. Another thing to note in the verse is that.. …and the atmosphere boiled over, we said, “Carry on it a pair of each kind, together with your family, except… Prophet Nuh was told after the atmosphere boiled over to collect a pair of each kind. That means the rains were about to start. That means there was no time to go around the world to collect pairs of all species.