The process by which water crosses a selectively permeable membrane is called a) osmosis. b) mitosis. c) meiosis. d) active transport.

Osmosis.

Osmosis is the inevitable net movement of solvent molecules within a selectively permeable membrane toward a region of higher solute concentration, in the course that directs to balance the solute concentrations on the two sides

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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biology is the study of life. it is the study of living organism.