III z 1. Glacier formation A. snow builds up B. upperlayers press down on buried layers of snow and turn them into an ice mass upper layers continue to compress the lower layers and the ice mass becomes dense II. Glacier movement A.weight and pressure cause glaciers to move outward and downward B. v 1.valley glaciers-flow down valleys 2.continental glaciers (ice sheets)- flow outward in all directions from center ways of moving 1.Internal deformation - weight and gravily cause glader to spread 2. W D. x A. retreat - glacier ddes not extend as far down a valley as It previously did 1.cause: ablation - combination of processes such as evaporation, melting, wind erosion, and avalanche, which reduces the glacier's snow and ice B. calving-ice breaks off a glacier's lowest end 6. Which item best belongs in place of the X? A. becoming icebergs B. shaping the land D C. water cuts channels D. what glacierslook like 1.erosion - pushes rock and earth as It moves 2. deposition-dumps rock and earth off at the sides or the end of the glacier 3. land formations a.moraine-a mound or ridge composed of clay, silt, sand, gravel,and boulders b. Y C.esker-a long ridge of sedimentary materia -usually sand or gravel- formed by the water that cut channels through or under the glacier

## Step 1<br />The problem is asking us to identify the correct term that fits in the blank (X) in the given text. The text discusses the formation and movement of glaciers, and the effects of these processes on the landscape.<br /><br />## Step 2<br />The text mentions that glaciers move outward and downward due to weight and pressure. This movement causes various geological changes, such as erosion and deposition.<br /><br />## Step 3<br />The text also mentions that glaciers can retreat, which means they do not extend as far down a valley as they previously did. This retreat can be caused by various processes such as evaporation, melting, wind erosion, and avalanches.<br /><br />## Step 4<br />The text also mentions that glaciers can calve, which means ice breaks off from the lowest end of the glacier.<br /><br />## Step 5<br />The text also mentions that glaciers can cause erosion, which pushes rock and earth as it moves, and deposition, which dumps rock and earth off at the sides or the end of the glacier.<br /><br />## Step 6<br />The text also mentions that glaciers can form land formations, such as moraines and eskers.<br /><br />## Step 7<br />Given the context of the text, the term that best fits in the blank (X) is "becoming icebergs". This is because the text is discussing the effects of glaciers on the landscape, and the formation of icebergs is a direct result of the movement and retreat of glaciers.