<span>I think you might be asking about the 3 different osmotic conditions a cell might find itself in. Isotonic is the normal cell environment where water moves in and out of the cell freely and equally in both directions. It is in osmotic equilibrium so to speak. The concentration of water and solutes is equal on both sides of the cello membrane. In a hypotonic solution the cell will gain water and swell up -...</span>
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It was a Greek astronomer called Aristarchus of Samos.
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Gametes are produced in meiosis, they are a sperm or egg that is fused together with another gamete to make a zygote.
Elevation because it means the level of a point surface height above the sea level
The process of grouping things based on their similarities is classification