#1. WHAT IS THE LONGEST RIVER ON EARTH?
#1.1 WHAT IS THE LONGEST RIVER IN ASIA?
#1.2 WHAT IS THE LONGEST RIVER IN AFRICA?
#1.3 WHAT IS THE LONGEST RIVER IN NORTH AMERICA?
#1.4 WHAT IS THE LONGEST RIVER IN EUROPE?
#1.5 WHAT IS THE RIVER THAT FLOWN THROUGH THE MOST CONTRIES?
#2. WHAT IS THE BIGGEST LAKE ON EARTH?
#3. WHAT IS THE BIGGEST FRESHWATER LAKE?
#4. WHAT IS THE BIGGEST LAKE IN ASIA?
#5. WHAT IS THE BIGGEST LAKE IN NORTH AMERICA?
#6. WHAT IS THE BIGGEST LAKE IN THE GREAT LAKES?
#7. WHAT IS THE LARGEST WATERFALL?
#8. WAHT IS THE HIGHEST WATERFALL?
PS: PLEASE AVIOD CHEKING ON INTERNETS! BUT IT'S FINE TO ASK OTHERS🙂