Frogs are amphibians, so their skin is partially permeable. They live in and close to water, for example lakes and marshes, where the water has a low concentration of mineral ions. Any water they require is taken in through their skin. Biologists worry that frogs living near coastlines could become endangered if global warming causes sea level to rise. Sea water has a high concentration of mineral ions. What would happen to the frogs if their habitat were flooded with sea water?
- AWater would move into the frog by osmosis.
- BMineral ions would move out of the frog by diffusion.
- CWater would move into the frog by diffusion.
- DWater would move out of the frog by osmosis.