Answer: The Great Barrier reef is 2,300 kilometers long (1,400 miles) located at the coast of Australia
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I believe they are internal forces.
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The use of CFCs <span>does not contribute to increased air quality. </span>
Answer: Principle of Superposition
Explanation: In an otherwise undisturbed sequence of sedimentary strata, or rock layers, the layers on the bottom are the oldest and layers above them are younger. Principle of Original Horizontality: Layers of rocks deposited from above, such as sediments and lava flows, are originally laid down horizontally. Hope this helps!