Apiece of potato was placed in a beaker of water. what best describes the movement of the molecules across a semipermeable membrane

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

your answer is going to be physical weathering