Question

4. Explain the term, ' Mean Sea Level '.


5. Which landforms are appropriate for the protection of marine borders and naval-base buildings?​

Answer 1

Answer:

4)Mean sea level (MSL) (often shortened to sea level) is an average level of the surface of one or more of Earth's bodies of water.

5)artificial islands have been found to be very effective in the protection of marine borders and naval base buildings.