Alternation of the strabismus may occur spontaneously, with or without subjective awareness of the alternation. Suffixes display a slightly different type of consonant alternation. Romanian has vowel alternation or apophony triggered by stress. Concurrent schedules often induce rapid alternation between the keys. Within this outline, the focus centered on periodic alternation and juxtaposition. The voicing alternation between and occurs now as realizations of separate phonemes and . French has an example of morphologically conditioned alternation. These satiation and alternation behaviors are evolutionarily adaptive. Plants have two multicellular life-cycle phases, resulting in an alternation of generations. This cycle is known as alternation of generations or alternation of phases. These probably had an isomorphic alternation of generations and were probably filamentous. Haspelmath refers to this as the causative alternation. Salps have a complex life cycle, with an obligatory alternation of generations. Consequently, this cycle is also known as the alternation of generations. This cycle is known as alternation of generations.