Question

The creation of sinkholes is an effect mentioned in this

passage. What is the cause?
S.
A
water
B
heat
С
crystal
sand

Answer 1

A

Step-by-step 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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