Physical erosion is the process where rocks change their physical properties with out changing there basic chemical components. :8)
It is true if they didn't have the safety measure consumers could get sick.
Answer:
6m ramp
Explanation:
I'm assuming you need the ramp which will make it the easiest which would be the 6m ramp because since it is longer it will be a more gradual incline making it easier to move the boxes.
It covers the concepts of mathematics covered all throughout high school, pretty much starting with algebra conceps.
