| 31. | Other threats include alterations in hydrology, herbicides, and introduced species.
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| 32. | Many introduced species have already established themselves, and longline fishing.
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| 33. | Other threats include disease and possible competition from introduced species.
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| 34. | Introduced species are marked with an asterisk ( * ).
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| 35. | It is an introduced species in Australia and North America.
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| 36. | The species is currently threatened by introduced species, particularly rats.
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| 37. | Threats still exist from groundwater pumping, vandalism, and introduced species.
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| 38. | It is an introduced species, brought here from somewhere else.
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| 39. | Why some introduced species become rampant pests whereas others do not remains a mystery.
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| 40. | Some " Gypsophila " are introduced species in other regions.
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