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a solution to which a little acid has been added to a lot of water.
the introduction of halogen atoms into a compound by addition or substitution.
making a solution by mixing a substance (solute) with a liquid (solvent).
an ion that has both a positive and a negative charge on the same group of atoms.
an increase in the amount of nutrients in the water, which causes algae to grow and decay...
electromagnetic waves, similar to X-rays, but with a much shorter wavelength.