it's <em>A</em>
Explanation:
your answer needs to be at least 20 characters long
Answer:
Gabbro and basalt
Explanation:
The oceanic crust is mainly made of gabbro rocks and different types of basalt rocks.
Answer:
They are shorter and not as long. Also they are in the west while the rocky mountains are in the east
Explanation:
They began to form by a combination of volcanic activity and the deposit of marine sediments. It formed along northwest Africa about 530 million years ago. ... As the Appalachian Mountains eroded, sand and clay were deposited over Florida's limestone layer.
Answer:
Because it is important commercial waterway for exported goods
Explanation: