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環境保護 デイリーステッカー 7.19 参加報酬 3問正解でさらに5

2016-07-19View Original

Thread Content

単一選択問題;大気中のCO2濃度が上昇する主な原因は()A. 矿物燃料の大量使用 B. 太陽黒点の増加 C. 温帯林の深刻な破壊 D. 地球の温度上昇による海水からのCO2の溶出。A
Reply #22016-07-19
A. 矿物燃料の大量使用
Reply #32016-07-19
A. 矿物燃料の大量使用
Reply #42016-07-19
A. 矿物燃料の大量使用
Reply #52016-07-19
A. 矿物燃料の大量使用
Reply #62016-07-19
A. 矿物燃料の大量使用

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