Which of the following materials is the least porous?
1. loosely packed gravel 2.sorted sand and rock 3.unsorted sand and rock 4.large pebbles and boulders

Which of the following materials is the least porous 1 loosely packed gravel 2sorted sand and rock 3unsorted sand and rock 4large pebbles and boulders class=

Respuesta :

Answer:

3.unsorted sand and rock

my answer, but I'm sorry if I'm wrong