What are finger lakes? how do they form?

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 structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."