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23 June, 20:36

As described in Investigating Life 20.1, scientists found that the range of the alpine chipmunk has shifted about 500 meters up in elevation, leading to isolated subpopulations on individual mountaintops. According to the researchers, what has caused this shift?

A. harmful UV radiation due to the ozone holeB. habitat destruction due to acid precipitationC. introduction of nonnative speciesD. climate warming due to increased CO2 concentrations

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  1. 23 June, 22:19
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    Answer: A. Harmful UV radiation due to the ozone hole.

    Explanation:

    According to the researchers, this is caused by the ozone hole. The ozone hole is a part of the atmosphere in which occurs abnormal reductions of ozone layers. This is caused by the excessive amount of chlorine and bromine found in the atmosphere.

    One of the main damages as a consequence of this phenomenom is the harmful levels of UV radiation that the earth receives, therefore affecting its flora and fauna as well as wildlife.
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