21. Florida has already been particularly hard hit by alien species . 22. Every alien species is cut down, with stumps painted with herbicide to ensure death. 23. Furthermore, fish farms introduce alien species are to local environments. 24. The vast majority of alien species arrive with human help. 25. Over all that time-it is perhaps possible that some alien species would find it. 26. The " Mutants " are composed of 2 alien species . 27. What are the alternatives to introduction of an alien species for controlling a pest? 28. Tree seedlings and intrusive alien species without fire tolerance are eliminated by periodic fires. 29. The Hexamon includes several alien species who have come to live with humanity's descendants. 30. Evenhuis also campaigns for teaching school children to discern native species from alien species .
