The amygdala is an almond-shaped structure deep in the brain that is believed to be a communications hub between the parts of the brain that process incoming sensory signals and the parts that interpret these signals. It can alert the rest of the brain that a threat is present and trigger a fear or anxiety response. The emotional memories stored in the central part of the amygdala may play a role in anxiety disorders involving very distinct fears, such as fears of dogs, spiders, or flying.
Chemical formula for vinegar. Vinegar is composed of about 5% acetic acid. This is the major chemical component of vinegar. The systematic or proper chemical name of acetic acid is ethanoic acid. Vinegar is a weak acid produced by the oxidation of alcohol (ethanol) from wines and ciders by bacteria. It has a pleasant sour taste and is used in cooking or as a condiment.
(The alcoholic liquid used to create a vinegar is generally reflected in the vinegar's name -- for example, red wine vinegar, white wine vinegar, malt vinegar, or cider vinegar.) In the second phase of the vinegar-production process, certain naturally occurring bacteria known as acetobacters combine the alcohol-containing liquid with oxygen to form the acetic-acid solution we call vinegar.