Erosion occurs when natural forces alter a landscape what does it mean to alter a landscape

It means changing how the landscape looks like.

2%? i tried finding the exact sorry if it's not 100% correct ; -;

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101