Final answer:
Osmosis is the diffusion of water across a semipermeable membrane. It plays a role in understanding the movement of water, which is relevant to the water crisis.
Step-by-step explanation:
Osmosis is the diffusion of water across a semipermeable membrane. In the context of the water crisis, osmosis plays a role in understanding the movement of water across different concentrations.
For example, if water moves through a semipermeable membrane from an area of high concentration to an area of low concentration, it can help address water scarcity in regions with low water availability.