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ITBS Level 13 Grade 7 Science
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Avg score: 86% Most missed: “According to this graph, about how many butterflies were in the forest five year…”

Directions: Use the information below and your knowledge of science to answer questions below.

Twenty specimens of a new species of butterfly are introduced to a small forest.

The following is a graph of the number of butterflies of this species in the forest as a function of time.

ITBS Level 13 Grade 7 Science
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2 Questions

1. Which of the following best describes the growth of the butterfly population after a long period of time, as shown by this graph?
2. According to this graph, about how many butterflies were in the forest five years after they were first introduced?