Answer:
A. absorbs wave energy and can slow the undercutting of coastal cliffs
Explanation:
- A rip rap is known as a rock armor is a man placed rocks that are used as a shield to protect the shorelines streambeds and bridges and other structures against the water, waves and ice erosion and the most common type includes the granites and concrete.
- Mostly is used as a method of protection form erosion and keeps the coastlines clean and clear form the impacts can be also used to connect of joining the water highways along the coasts.
D. Spain, because all other countries have access to nuclear weapons.
The change in the layout of the grid system is an example of urban planning and development.
<u>Explanation:</u>
Urban planning and development takes into consideration the layout of a city or town and plans a layout of all the essential amenities and facilities required in the area. With urban planning and development, the city or town is divided into several small areas and the planning takes place in stages.
Urban planning and development also takes into consideration the factors like movement of people, layout of houses, types of houses and other such factors that have an impact in how a town or city is planned for the maximum benefit of people.