Ozonhullet bliver mindre
Siden 1990 er brugen af ozonnedbrydende stoffer næsten udryddet. Ozonhullet bliver nu mindre og mindre. Det er anslået, at ozonlaget er genoprettet i 2050.
FN
Siden 1990 er brugen af ozonnedbrydende stoffer næsten udryddet. Ozonhullet bliver nu mindre og mindre. Det er anslået, at ozonlaget er genoprettet i 2050.
FN
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