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Horticulturists live near their crops to give them:

protection
fertilizer
water
magic

How do oceanographers measure the salinity of ocean water?

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 %.

Soil is made of air water organic material minerals weathered rock