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| Trees in the Environment |
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| Acid rain does not usually kill trees directly. Instead, it is more likely to weaken trees by damaging their leaves, limiting the nutrients available to them, or exposing them to toxic substances slowly released from the soil. Researchers now know that acid rain causes slower growth, injury, or death of forests. Air pollution can injure or damage plants and trees. Ground-level ozone and acid rain are two issues of concern. Michigan has done much to control and reduce air pollution.
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