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ARC-Challenge / MCAS_2005_8_2 / Which of the following statements best explains why the lower mantle of Earth is…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Which of the following statements best explains why the lower mantle of Earth is much more rigid and dense than the upper mantle?

choices

  • The lower mantle is older than the upper mantle.
  • The lower mantle is cooler than the upper mantle.
  • The lower mantle is under more pressure than the upper mantle.
  • The lower mantle is farther from the core than the upper mantle.

Discussion

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Source and history

upstream_id / Original problem ID
MCAS_2005_8_2
task_id
54afae6b-d2bd-5808-8c81-618f30065760
task_key
ARC~2dChallenge--test--MCAS~5f2005~5f8~5f2
task_revision_id
1
config / split
ARC-Challenge / test

Official source

initial import