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Lessons 59 - 63

Science in the Beginning
Across
An organism that lives in saltwater.
A process by which scientist analyze the light emitted by a substance to learn more about it.
A general term that refers to anything that is alive, be it plant, animal or something else.
The motion of atoms or molecules from high concentration to low concentration.
The tendency of a solvent to flow across a semipermeable membrane to where there is more solute.
Down
A thin layer of tissue.
An object that allows some things to pass through it, but not all things.
Dark blotches on the sun that indicate a lower temperature than the rest of the surface.
An organism that lives in water that has a low level of salt in it.
A chemical that reacts with acids
A chemical that reacts with bases.