what is the name of the tallest mountain in the world?
Mount Everest
what is the name of the longest river in the world?
Amazon
what is the name of the longest bridge in the world?
Danyang–Kunshan Grand Bridge in China
what is the name of the biggest city in the world?
Tokyo
what is fastest animal in the world?
Cheetah
what is the biggest fish in the world?
whale shark
what is the smallest bird?
humingbird
