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what am Itricky

While I am in air, I am not in oxygen. I am also in water, but not in hydrogen. I am necessary in all animals, but you won't find me in the zoo. Look in all brains and you'll find me there too. What am I?
The Letter A.
65.81 %
202 votes
cleansimplewhat am I

I sometimes come in a can but I'm not food. I sometimes come in a bottle but I'm not a beverage. I come in different colors but I'm not a rainbow. I'm sometimes used with canvas but I'm not a tent. I'm used with a brush but I'm not toothpaste. What Am I?
Paint
75.29 %
97 votes
1234
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