1) What is the longest river on the Earth? a) Nile river b) Amazon river c) Mississippi river d) Yellow river 2) What is the tallest waterfall on the Earth? a) Victoria Falls b) Angel Falls  c) Tugela Falls d) Niagara Falls 3) Where is the hottest spot on the Earth? a) Death valley b) Sahara desert c) Dashte Lut d) Sonoran desert 4) Where is the most populated country in the world? a) Russia b) USA c) China  d) India 5) Which country in the world has the most official languages? a) India b) China c) Bolivia d) Zimbabwe

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