Gakken Learning & Science Special Edition: Upper Grades Spring Issue - Volcanoes and Earthquakes Secret Seminar

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This is the Gakken Special Edition for Upper Elementary Grades, Spring Issue: Volcanoes and Earthquakes Secret Seminar, released by Gakken in 1990.
It includes explanations of the mechanisms of volcanoes and earthquakes.
It has been stored in a dark place at home, but due to long-term storage, there are minor scratches, signs of use, and discoloration throughout.
Please be aware of this in advance.

If you have any questions, please feel free to ask in the comments.