Answer:
13. Gentle Beach Slope - Spilling Breakers.
14. Steep Beach Slope - Surging Breakers.
15. Moderate Beach Slope - Plunging breakers.
Step-by-step explanation:
Spilling breakers - Waves move across a gently sloping sea floor creating foam and turbulent water.
Surging breakers - Waves travels down a steep beach slope as it builds up and then moves rapidly up the beach.
Plunging Breakers - Wave crests fall forward with a great deal of force in a well-defined area as it travels across a moderately sloped beach. The wave crests form a well-defined curl as they approach the shores.