Evolution of the cochlea signals that displace the eardrum by a mere picometre. Because of its prominence and preserved state in the fossil record, until recently, the ear had been used to determine phylogeny. The ear itself contains different portions, including the outer ear, the middle ear, and the inner ear and all of these show evolutionary changes that are often unique to each lineage [14]. It was the independent evolution of a tympanic middle ear in the Triassic era that produced strong selection pressures towards improved hearing organs in the separate lineages of land vertebrates. The cochlea is the tri-chambered auditory detection portion
Who Are You (Buffy the Vampire Slayer) Who Are You (Buffy the Vampire Slayer) "Who Are You" is the 16th episode of season 4 of the television show "Buffy the Vampire Slayer". Written and directed by series creator Joss Whedon, it originally aired February 29, 2000 on the WB Television Network. Buffy, in Faith's body, is abducted by the Watchers Council's team. Meanwhile Faith, in Buffy's body, gives herself a makeover and heads to The Bronze, where she has ruthless fun at the expense of Spike and Tara. Tara recognizes that something is wrong, and she and Willow perform a spell to find the real Buffy. Faith