For the answer to the question, what is Canada's symbolic ruler? The right answer to this question is still the British Monarch.
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The correct answer is - The Principle of Superposition.
The Principle of Superposition suggests that the newest rocks are on the top while the oldest rocks on the bottom of the layers, or with other words, the new rocks are always deposited on top of the older layers, thus making a horizontal type of layers in proper order from the oldest to the youngest layers as we go from the bottom to the top. By this principle, it comes as the lava flows or the deposited sediments are covering the layers that are already in place and are naturally ordering themselves by age.
20. is Memphis Tennessee
21. is Knoxville Tennessee
