1) How many states of water do we have? a) 5 b) 6 c) 3 d) 4 2) How many oceans are there in the world? a) 4 b) 1 c) 8 d) 6 3) Do we find more salt or fresh water in the world? a) we find more fresh water b) we find more salt water 4) what is the longest river in the world? a) Thames b) Amazon river  c) Nile d) Tiber 5) What is the biggest animal in the oceans? a) shark b) blue whale c) sardine d) tuna 6) What is the biggest lake in the world? a) Vostok lake b) Victoria's lake c) Caspian lake d) Trasimeno lake 7) what is the saltiest sea in the world? a) Dead sea b) Mediterranean sea c) Atlantic sea d) Baltic sea 8) How many people in the world don't have water? a) 200.000 b) 1.000.000 c) 100 d) 1.000.000.000.000 9) In your opinion, how many liters of water do we waste taking a shower? a) About 30 litres b) About 10 litres c) About 80 litres d) About 115 litres 10) What is the percentage of water in a man? a) 90% b) 65% c) 35% d) 50% 11) What is the percentage of water in a woman? a) 60% b) 75% c) 20% d) 44%

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