Sinkholes Are

Q11: The depth below which one must dig

Q12: Rivers and streams are<br>A)extremely large compartments and

Q13: It is estimated that _% of the

Q14: The area where water infiltrates into an

Q15: Subsidence can cause<br>A)cyclones<br>B)deforestation<br>C)sinkholes<br>D)none of these

Q17: Which represents the correct order of the

Q18: Conversion of saltwater to freshwater by boiling

Q19: Soil and water positioned above a layer

Q20: The term for the sinking of land

Q21: Located under Nebraska and seven other states,