Answer:
The principle of superposition
Explanation:
The principle of superposition states that sedimentary layers are deposited in sequence, and, unless the entire sequence has been turned over by tectonic processes or disrupted by faulting, the layers at the bottom are older than those at the top.
Neither is correct.
If you are using Odyssseyware Then this is 100% correct.
here we go, D. The troposphere
0°longitude
its passes through the middle which at 0°