<span>Good Morning!
The entry and exit of substances from cells occurs through the plasma membrane. The control of external and internal water balance is performed through the osmosis process. In osmosis, water moves according to solute concentrations: always from the lowest concentration to the highest concentration.
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They used it for telling the weather if it was gonna rain or be cloudy or snowy. they also used it to tell the time. if it was dark- it was night. if the sun was rising it was morning.
Sugar is a monomer called monosaccharides and sugar cubes are polymer because a polymer has a molecular structure
