Q: In this task, you are given a sentence in the English language and your task is to convert it into the Japanese language. In translation, keep numbers as it is and make it sentence case (capitalize only the first word of each sentence and noun).
He also warned that up to 250 million people in Africa could face what he called "increased water stress because of climate change."
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
パチャウリ氏はまた、アフリカでは2億5000万人もの人々が、彼が言うところの「水獲得のための衝突の増加」に直面する可能性があると警告した。