"Umwelt" (Environment) Vocab Quiz

Across

• 1. die Klimaveranderung = climate change...but can you name the other german word that can be used instead? (3, 3, 11)
• 2. brennen = to burn, but what's it in the past tense? (8)
• 3. das CO2 is (obviously) Carbon Dioxide, but what's the other option? (3, 12)