Science STAAR

Woody plants have many different kind of leaves. Some leaves have very smooth edges, while other leaves have jagged edges, as shown in the diagram. The characteristics of plant leaves vary with the climate in which the plant naturally grows. Some scientists discovered an area with many fossilized leaves of woody plants. The scientists used data from samples of 100 leaf fossils to compare the number with smooth-edged leaves and the number with jagged-edged leaves. The scientists concluded that the plants had grown in a hot climate. Which graph most likely represents the data from the investigation? (5.9D)

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The picture shows rock layers next to a road. Layer 3 contains many plant fossils. Layer 3 most likely formed in which of these environments? (5.9D)

• Desert

• Forest

• Ocean

• Tundra