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Read the passage. Then answer the question below.

greater prairie chickens on a Nebraska prairie

- In the Sandhills region of Nebraska, a grassy prairie grows on sand dunes. The roots of grasses, such as the prairie sandreed, help hold the sand in place.
- Greater prairie chickens roam through the grasses eating seeds, leaves, and insects. Adult prairie chickens are prey for coyotes, great horned owls, and red-tailed hawks. Their eggs can be eaten by raccoons, skunks, and red foxes.

Which of the following best describes an ecosystem on a prairie in Nebraska?

the seeds, the leaves, and the insects

the red foxes

the sand dunes, the prairie sandreed, and the greater prairie chickens

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