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環境保護 デイリーステッカー 10.01 参加賞 3正解でさらに5

2016-10-01View Original

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単一選択問題;「南極のオゾンホール」について正しい記述は( )A. 南極地域にはもはやオゾンが存在しないことを示す B. 成層圏で発生する C. 純粋に人為的な要因によって引き起こされる D. その大きさは季節によって変化する。 D

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