18. Refraction is caused by
a) Waves encountering a gap
b) More than one reflection
c)...
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How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line
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When the cell concentrates potassium within, against the natural tendency of matter, it is performing a.passive diffusion b.facilitated diffusion c.active transport d.pinocytosis
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When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated
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