After reading the paragraph, select the sentence that identifies the theme. A glacier is a river of ice. It starts as a pack of snow. When the winter snowfall is so great that it does not melt in the summer, it causes the pack to grow. The summer wind layers it with dirt, and it continues to build into a hard body of ice. The weight of the glacier moves it slowly downhill.

The paragraph tells how glaciers are like rivers.
The paragraph tells how a glacier is formed.
The paragraph tells how glaciers are hard.

Match the vocabulary words to their definitions. 1. amendment to officially endorse or approve something, usually a document 2. carpetbagger a southern white who joined the republican party during reconstruction 3. monopolize a change in a legal document, such as the constitution 4. nativism a system of commerce in which several companies work together to control prices and limit competition 5. ratify favoritism toward the native-born citizens of a country 6. scalawag northerner who moved to the south during reconstruction 7. trust to control all of a product or another person's time