| 21. | Rescuers, some with machetes, threaded their way through thick undergrowth.
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| 22. | Rebels were waiting in undergrowth just 100 yards ( meters ) away.
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| 23. | In centuries past, small fires periodically cleared forests of such undergrowth.
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| 24. | The tree tops caught on fire and killed the undergrowth.
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| 25. | It is extremely useful for clearing undergrowth and unwanted hedgerows.
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| 26. | The trail is mostly in woods, but runs through some undergrowth.
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| 27. | Its habitat is undergrowth in moist forests and scrub jungle.
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| 28. | He proposed them in the sense " Vegetation of the undergrowth ".
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| 29. | At higher elevations the trees become shorter and have a denser undergrowth.
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| 30. | Peaks of old sand dunes are visible beneath its undergrowth.
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