Humans rely on minerals for many daily uses. How could the distribution of mineral resources be affected as the human population continues to increase?

Distance that the transcontinental railroad covered from omaha to san francisco.

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.

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