Answer :Asthenosphere refers to the mechanically weak, highly viscous, and ductility deforming segment of the upper mantle of the Earth. It is situated below the lithosphere, at the depths between about 80 and 200 km underneath the surface.
Explanation:
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superposition
Explanation:
the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence.
A cyclic change in the earth system repeats the same steps over and over, though not necessarily with the same results or at the same rate.
The Earth's climate cycles across a wide range of time scales, from years to decades to centuries to millennia. Different physical processes can start cycles at different scales. All of these layered systems and cycles working in concert determine the climate over any particular period.
Scientists examine Earth's cycles in an effort to understand how our world functions. Our planet's climates can vary as a result of modifications to Earth's cycles. Our understanding of how humans are influencing these cycles and how that can transform the world will grow as we learn more about them.
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