1.The biggest city in the world is Tokio
2.The largest in the solar system is Jupiter
3.The heaviest land animal in the world is the elephant
4.The tallest animal in the world is the giraffe
5.The longest river in Europe is the Volga river
6.The highest mountaina in Europe are the Alpi mountain
7. The most longevive animal is a shell
8.the most populated country is obviously China