What are the two elements that make up water?

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  • Choice "A": Nitrogen and Helium % of users selected this choice.
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Did you know...
Coming originally from South-East Asia, the first oranges were, in fact, green. Even today, in some regions such as Thailand, they stay green all throughout maturity.
Image credit: José Manuel Suárez, CC BY 2.0, via Wikimedia Commons.