Meandering rivers make bad state boundary lines because they are constantly shifting their location. In time, a meander bend may be cut off and form a crescent-shaped _____ lake. 

The proposed Keystone XL Pipeline would bring oil from the _____ to the Gulf Coast.

Hurricane Katrina created deadly flooding in New Orleans, Louisiana for all of these reasons EXCEPT _____

When using the scientific method, an idea that has been well tested and is widely accepted to be true is called a(n) _____.

_____ is the ease with which fluids can flow through a rock.

All of these may cause subsidence, EXCEPT ____.

The driest location on earth is the _____ .

The _____ of a river is the volume of water that it carries. When this increases during heavy spring rains and snow melt, it may lead to flooding and erosion problems.

Slump is a _____.

Ocean garbage patches, such as the Pacific garbage patch, are created by plastic and trash concentrated by _____.