BY: CASSIE GIBSON & DANIELLE PALAO

WHEN WATER PICKS UP THINGS AS IT GOES DOWNSTREAM WHICH CAUSES IT TO MAKE ABRASION

CHANGES THE FORM, BUT NOT THE MATERIALS IT'S MADE OUT OF

WHEN CHEMICALS IN THE AIR ANS WATER MAKE A COMPLETE NEW SUBSTANCE

WHEN GLACIERS MOVE PAST AREAS CHANGING THE SHAPE OF THE LANDFORM

WHEN THE WIND PICKS UP SEDIMENTS IN THE AIR AND MOVES THEM TO ANOTHER AREA