31. Alien species have varied from fairly humanoid to almost unrecognizable.32. Most Earthmen live elsewhere, as �migr�s on planets that are populated by alien species . 33. The Times-Picayune, New Orleans, Louisiana, on curbing alien species : 34. Give an alien species two centuries to spread and, experts say, eradication may be impossible. 35. Just as scientists seem to gain control of one invader, a new alien species appears. 36. Pathogen Introduction ( parasitism ) is one of the biological methods to eradicate alien species . 37. Mission mode requires the player to clear out a set number of an alien species . 38. They are typically stronger than each of the 2 alien species that share their traits. 39. Then, the ship was attacked by another alien species which is especially hostile and xenophobic. 40. We are a civilisation-have we visited any alien species ?
