1) How long can we survive without water ? a) 2 days b) 3 days c) 4 days d) 5 days e) 6 days f) 7 days 2) How many litres of water do we use to produce one egg ? a) 6 litres b) 50 litres c) 100 litres d) 200 litres e) 220 litres f) 300 litres 3) find the odd one out a) b) c) d) e) 4) How much of the Earth's land is covered by forests ? a) 5% b) 10% c) 30% d) 40% 5) How much of the Earth is covered by sea ? a) 12% b) 30% c) 42% d) 70% 6) How many orangutans do we lose every day because of deforestation ? a) 1 b) 4 c) 8 d) 10 e) 12 f) 25 7) How many people do not have access to clean water ? a) 300 million b) 500 million c) 750 million d) 1 billion e) 1.5 billion f) 2 billion

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