True it is the fourth or fifth largest river in america
I think it is the 3rd answer choice.
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.
Explanation:
Hi there!
Given;
one angle (let be x)= 141°
Then;
141° + angle 3 = 180°. {being linear pair}
angle 3 = 180°-141°
angle 3 = 39°
Therefore, angle 3 is 39°.
Now; angle 3 = angle 4 = 39° {alternate angles are equal}
Therefore, the measure of angle 4 is 39°.
<u>Hope</u><u> it</u><u> helps</u><u>!</u>
Tectonically stable means that this part of the continent has not moved for billions of years. The rock formation is important understanding the history of Earth since its unmoved and untouched state can provide ideas about how the Earth looked like as seen on the layers of the rock formation.