Answer:
A
Explanation:
The most common causes of a sinkhole are changes in groundwater levels or a sudden increase in surface water. A natural sinkhole typically occurs when acidic rainwater seeps down through the surface soil and sediment until it reaches a soluble bedrock like salt, limestone or sandstone.
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By helping the environment more plants would be living supplying more oxygen, the air would be cleaner decreasing health issues, more animals would be alive for food, ect. ;))
Answer:
In the northern hemisphere, there are two places in the Sakha, Russia that vie for the honour of being considered the "Pole of Cold" in winter. These are Verkhoyansk (located at 67°33′N 133°23′E) and Oymyakon (located at 63°15′N 143°9′E)
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