Final answer:
The availability of fresh water per capita is unlikely to remain stable over the next 50 years due to various factors such as water stress, limited accessibility, and pollution. The growing human population further exacerbates the water shortage.
Step-by-step explanation:
The availability of fresh water per capita is unlikely to remain stable over the next 50 years. Currently, 20% of the world's population lacks access to safe water and 50% lacks access to safe sanitation.
If current trends in water use persist, two-thirds of the world's population could be living in countries experiencing moderate or high water stress by 2025.
Only 2.5 percent of water on Earth is fresh water, and less than 1 percent of fresh water is easily accessible to living things. This limited supply of fresh water is expected to be further threatened by over-use and pollution.
With the rapidly growing human population, the water shortage is likely to worsen.
Considering these factors, it is evident that the fresh water available per capita is likely to decrease in the coming years, rather than remaining stable.