Hurricanes rotate _____ in the northern hemisphere.

Hurricanes rotate _____ in the northern hemisphere.

Caves are usually formed by _____ of limestone.

What rock type near the earth’s surface is commonly associated with sinkholes? _____

The Mississippi River has a _____ delta that moves sediment far out into the Gulf of Mexico. Unfortunately, the Mississippi River also carries agricultural fertilizers, which dump into the Gulf and create a Dead Zone for marine life.

A hurricane heading north in the Gulf of Mexico towards Texas would have the strongest and most damaging winds on the _____ side of the eye. 

The most common cause of sinkhole formation is _____.

Soil _____ is the slowest type of mass wasting and may cause bent tree trunks and leaning fences. It may also crack house foundations, driveways, and walls.

Which of these is NOT a greenhouse gas? _____

The water table is at the top of the _____ of groundwater.