| biological weapon | 52.60 | But producing biological weapons is one thing. | ||
| biological agent | 11.32 | Anthrax is a deadly biological agent. | ||
| biological parent | 9.08 | He has never met his biological parents. | ||
| biological attack | 6.52 | Such training could be irrelevant in a biological attack. | ||
| biological father | 6.12 | He never knew his biological father. | ||
| biological mother | 4.08 | He has kept in touch with his biological mother. | ||
| biological diversity | 3.42 | Biological diversity requires space. | ||
| biological research | 2.83 | Biological research is another important site of anxiety. | ||
| biological material | 2.63 | There was no semen or other biological material to test for DNA. | ||
| biological child | 2.37 | Blackwell had no biological children. | ||
| biological process | 2.24 | What biological process is at work? | ||
| biological terrorism | 1.91 | The problem is biological terrorism. | ||
| biological science | 1.78 | But it will almost certainly cast important new light on basic biological science. | ||
| biological evidence | 1.71 | In this case, biological evidence abounded. | ||
| biological system | 1.71 | Other biological cleaning systems have proved useful. | ||
| biological basis | 1.65 | Alcoholism has a biological basis like hypertension. | ||
| biological activity | 1.51 | Both peptides have essentially identical biological activities. | ||
| biological evolution | 1.51 | Darwin eventually put forward a model of biological evolution. | ||
| biological toxin | 1.45 | FBI agents acknowledge they never found a weapon or any biological toxins during their raid. | ||
| biological resource | 1.38 | The implications Nijhar speaks of lie in how we manage biological resources. |