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air traffic (5) |
airport (2) |
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climate (1) |
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ecological consequences (4) |
Emission (5) |
emission (5) |
air traffic (5) |
airport (2) |
Auswirkung (1) |
behavior modification (1) |
climate (1) |
climate change (2) |
climate policy (1) |
ecological consequences (4) |
Emission (5) |
emission (5) |