title: Mapbox Markers - Dynamic markers on one layer
body: <p>Is it possible in mapbox to have only one layer on which I'll add many markers dynamically (e.g. when the user will zoom on the map) or remove them dynamically (e.g. when the user zooms out)?</p>
  
  <p>Another question related to the first one: is a marker a layer? If so, what's the difference between the class L.Marker and a layout? </p>
  
  <p>Thanks for your insights.</p>