Answer:
shoreline
Explanation:
The continental margin is made up of the continental shelf, the continental slope, and the continental rise. The continental shelf begins at the shoreline. It is flat and its width varies.
The principal that states that younger rocks lie above other rocks in the superposition principal.
7 there are seven continents total
Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide from the atmosphere.
