Through which microscope were cells first observed?
simple microscope
tunneling microscope
compound light microscope
electron microscope

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25% or 1/4 of the offspring would have red flowers, 50% or 1/2 of the offspring would have pink flowers, and 25% or 1/4 of the offspring would have white flowers. i crossed rr and rr which are the pink-flowered genotypes to find these ratios.

Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .