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Extremely Hard Science Quiz Even Einstein would scratch his head!
Which two elements combine to make ammonia?
All dinosaurs lived where?
What is the atomic mass of oxygen?
When was the element ununbium discovered?
Which planet is name after the Roman God of Wealth?
How long can a dolphin stay under water?
How many types of sea urchin are there?
Which plant is orbited by the moon of Proteus?
The Narwhal is what type of sea creature?
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