In a particular dialect of English, the sounds [s] and [ʃ] n…

In a particular dialect of English, the sounds and never occur in the same phonetic environment: appears before front vowels (e.g., ) and appears before back vowels (e.g., ). Based on this distribution, what can you conclude about the phonological relationship between and in this dialect?

State whether each of the following indicates negative or po…

State whether each of the following indicates negative or positive feedback:  Part of the complex biochemical pathway of blood clotting is the production of an enzyme that forms the matrix of the blood clot. This has a self-catalytic, or self-accelerating effect, so that once the clotting process begins, it runs faster and faster until, ideally, bleeding stops.