Question

The rocks located in steam beds are often very smooth, why are they very smooth?​

Answer 1

Answer:

The LCM of 56 and 72 is 504. To find the least common multiple of 56 and 72, we need to find the multiples of 56 and 72 (multiples of 56 = 56, 112, 168, 224 . . . . 504; multiples of 72 = 72, 144, 216, 288 . . . . 504) and choose the smallest multiple that is exactly divisible by 56 and 72, i.e., 504.

Answer 2

Answer:

Transport of pebbles in a stream causes them to collide and rub against one another and the stream bed, and the resulting abrasion produces the familiar smooth and rounded shape of river rocks