The gap in the ozone hole over the North Pole can expand each summer enoughthat it exposes regions as far south as Sweden by heightened UV radiation, also increasing rates of skin cancer in the northern regions by as much as 50 percent.
A. that it exposes regions as far south as Sweden by heightened UV radiation, also increasing ----Also increasing rates of cancer is a second factor; therefore, we need a conjunction. If it was meant to be a modifier modifying the gap, then we should not use
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A. that it exposes regions as far south as Sweden by heightened UV radiation, also increasing ----Also increasing rates of cancer is a second factor; therefore, we need a conjunction. If it was meant to be a modifier modifying the gap, then we should not use
...
