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The purpose of the gizzard is to

What makes equine urine normally cloudy?

Briefly explain the difference between extrusive and intrusive rocks.  Include textures and origin.

The principle of uniformitarianism states that “the present is the key to the past.”  Briefly explain how geoscientists apply this principle to explain past processes.

From top to bottom of Bowen’s Reaction Series, the minerals get

Earth’s continents are generally thought to be

From top to bottom of Bowen’s Reaction Series, the melting point

If the Yellowstone hotspot was in the middle of the Pacific Ocean, do you think it would be a more explosive volcano, or less explosive?  Why?

From top to bottom of Bowen’s Reaction Series, silica content

Fill in the table, in proper order, with all periods of the non-Precambrian Geologic Time Scale.  Please remember the law of superposition! Era Period  Cenozoic Period A ” Period B ” Period C  Mesozoic Period D ” Period E ” Period F  Paleozoic Period G ” Period H ” Period I ” Period J ” Period K ” Period L ” Period M Period A is Period B is Period C is Period D is Period E is Period F is Period G is Period H is Period I is Period J is Period K is Period L is Period M is