The land east (landward) of the Cascade Mountain Range in eastern Washington receives little rainfall and is a _____ desert.

___ is the common carbonate mineral in sea shells and coral reefs, and may be at risk of dissolving due to ocean acidification. This is also the main mineral in limestone caves.

Which of these is NOT a fossil fuel? _____

Many of the largest deserts in the world, like the Sahara Desert, are found at the _____.

The land east (landward) of the Cascade Mountain Range in eastern Washington receives little rainfall and is a _____ desert.

Which of these is NOT a fossil fuel? _____

The 2010 eruption of Eyjafjallajökull volcano in Iceland grounded airplane traffic in Europe for 6 days due to _____.

The Dust Bowl in the central U.S. states was caused by _____.

Most of the electricity we use in the U.S. comes from _____ power plants.

The rock _____ cools and crystallizes from magma deep underground. This is the main rock type of the continental crust and may be quarried for building stone. This rock type is found at Enchanted Rock, Texas.