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What is the answer for this 7th grade science

What is the answer for this 7th grade science
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What is the answer for this 7th grade science

What is the answer for this 7th grade science-example-1
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User Venkatesh Somu
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answer is 4. they refer to atoms
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User Binu George
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The green and black symbols refer to atoms, that make up the molecule of water, more specifically you can say that the 2 Hydrogen atoms are the black ones found outside, while the central atom, that is also green would be oxygen.
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User Izak Joubert
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