Sources of salt water on earth include ice, rivers, lakes, and groundwater.

What is the difference between emigrate and immigrate? ?

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 %.

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa