Heart Palpitation: 8 Reasons for Your Abnormal Heartbeat. Heart palpitations occur when the heart beat increasesâit may noting a flutter, skipped beat, or heart rate thatâs abnormally hard and fast in your chest, throat, or neck. Heart palpitations can be frightening if youâve never experienced them before.
a combining form meaning âwater,â used in the formation of compound words: aquiclude; aquiculture; aquifer. Also, aqua-. Origin of aqui-.
The Air Quality Index (AQI) also known as the Air Pollution Index (API) or Pollutant Standard Index (PSI)), is an indicator of air quality, based on pollutants that have adveâ¦rse effects on human health and the environment.