Final answer:
Earthquakes tend to be concentrated in coastal areas.
Step-by-step explanation:
The concentration of earthquakes on Earth's surface is not random and tends to be coastal areas.
Coastal areas are prone to earthquakes because they are often located near plate boundaries, where tectonic plates interact with each other. These interactions can result in the release of energy that causes earthquakes.
For example, along subduction zones, where an oceanic plate is being pushed beneath a continental plate, earthquakes can occur both in the oceanic plate as it subducts and in the overriding continental plate. The depth of earthquakes at subduction zones generally decreases as you move inland from the coast.