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MMLU / Why is it thought that the climate on Mars changed when the planet lost its…

Problem

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

question

Why is it thought that the climate on Mars changed when the planet lost its strong magnetic field?

choices

  1. without a strong magnetic field the ozone layer was destroyed by the solar wind which stopped the greenhouse effect and cooled Mars down.
  2. without a strong magnetic field which enhances the greenhouse effect Mars cooled down.
  3. without a strong magnetic field the solar wind stripped away most of the atmosphere significantly reducing the greenhouse effect and cooling Mars down
  4. without a strong magnetic field the planet recieves fewer charged particles from the solar wind and therefore is not heated as much

subject

astronomy

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Source and history

Official source

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