What are the components of a water molecule?

The chemistry shorthand for water is  H₂O  .

Right there, it's telling you that a molecule of water is the combination of two Hydrogen atoms bound to one Oxygen atom.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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