Evolution of the cochlea and the elongated cochlea allows for better sensitivity for higher frequencies. As in all lepidosaurs and archosaurs, the single-ossicle (columellar) middle ear transmits sound to the footplate of the columella, which sends a pressure wave through the inner ear. In snakes, the basilar papilla is roughly 1mm long and only responds to frequencies below about 1 kHz. In contrast, lizards tend to have two areas of hair cells, one responding below and the other above 1 kHz. The upper frequency limit in most lizards is roughly 5–8 kHz. The longest lizard papillae are about 2mm long and contain 2000 hair
Jock Stirrup Armed Forces, Stirrup viewed the solution as being essentially political. In order to take action against the militias, the local British commander in South East Iraq developed a plan to conduct aggressive operations against them. At the same time Stirrup became increasingly concerned that strong political leadership from the Iraqis was lacking and that without this any gains made by the military actions against the militias would be to no avail. In July 2006, Stirrup overturned the previous military advice to the Defence Secretary by stating that force levels in South East Iraq would need to be maintained. Previously it