D. Focusing
Sound waves reflected in flat surfaces like walls, floors and ceilings results to uneven dispersion of sounds by creating locations with high intensity and another with low intensity. This process is called Focusing and can be undesirable in auditoriums.
flagellum is the answer! Hope this helps!!!!!
(B.) Sea levels rose over 300 feet
I think
A because when the little fish die they sink to the bottom, and after time the skeletons build up on top of each other.