Why was natural selection an important contribution to the theory of evolution? it proved that evolution is true. it explained how evolution works. it summarized the process of evolution. it highlighted the main points of evolution.

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?