Trees in conifer forest damaged by acid rain
Bildnummer 12058967
| Acid rain damage to trees. Damaged and dying trees in a conifer forest due to the effects of acid rain. Acid rain is caused by gaseous pollutants dissolving in the water as it falls. The main acid rain pollutants are nitrogen oxides from car exhausts and sulphur oxides from the burning of coal by power stations and industry. Normal rain has a pH of 5.6 but the gases acidify it to a pH of 4-4.5. Aquatic organisms are also affected as lakes and streams are acidified. Trees are also affected by ozone,a poisonous form of oxygen,which is emitted by car exhausts too. Photographed in the Appalachian Mountains,USA | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / McIntyre, Will |
| Bildgröße: | 4591 px × 3092 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: |
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