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.
I would like to guess the answer is distilled water but I'm not positive
Natural Gas should be correct
well luckily for you I live in Alaska and it is the Yukon River
