It is harder than the lower mantle and it holds the crust. It is also part of the lithosphere
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Hey you ... Thnx to your answer. I hope you can help the other's haha
You're welcome and I hope so aha :)
Asthenosphere is a special feature of upper mantle.
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But upper mantle is not a part of asthenosphere. Asthenosphere includes the lower mantle, not the upper?