Determine Word Meanings in Text Practice Test

Read the passage: In fall, many birds migrate, or travel, to warmer places. For example, some geese fly south where it is not so cold. They return in spring when the weather warms up. In the passage, what does migrate mean?

Read the passage: Some rocks hold a fossil, or the remains of a plant or animal. For example, you might see a shell shape in stone. In the text, what does fossil mean?