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You notice the cave walls reacting to gases! You determine that teal = nitrogen, red = oxygen, black = carbon dioxide, and lime green = helium. You must choose the path that is reacting to the gas present in the planet’s lower atmosphere!

Fact Lab

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Continue to play the quiz afterwards
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Interesting fact:

It is estimated that there are about 500,000 pieces of space junk drifting out there in the great expanse, including pieces of rockets and satellites, and even everyday objects like banners that might have accidentally been dropped during the construction of the International Space Station!

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