the least populous continent

country which spends largest on defence

tallest tree in the world

river that carries maximum level of water is

largest ,heaviest, a longest mammal is

tallest animal is

hottest planet with surface temperature 464.c is

fastest planet is

common element in atmosphere is

largest bone in human body is

longest glacier is

brightest planet is

the sum of angel in a triangle is

the first black president of south africa