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Your search for "limestone" returned 222 results
Preparing Garden Soil
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Garden soil must be the right mix of clay, silt, sand, and organic material. Learn all you need to know about preparing garden soil at HowStuffWorks.
Test Your Knowledge of British Geography!
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Across the pond sits an island that is the hub of what is known as the United Kingdom. A world power for centuries, this land is well known for many things. But how well do you know the land of the British?
5 Most Amazing Caves
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The Doll's Theater of Carlsbad Caverns looks otherworldly and took ages to form. What other incredible sights await us below ground?
7 Secret Caves We'd Love to See Inside
science.howstuffworks.com/environmental/earth/geology/secret-caves.htm
There are caves all over the world, but some are in places that are hard to explore — hidden by rocks, ruins or even under ice. We've found seven secret caves you probably never knew existed.
Can You Name More Than 13 of These Famous Sculptures?
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If you can name more than 13 of these sculptures, we're going to take a guess and say you went to art school. From ancient Greece to more modern pieces, you'll have to carve your way through this quiz to prove you're an expert!
How to Remove Water Spots
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Just when you thought it was safe to go back into the water you find out that even it can stain your household surfaces. Follow these stain removal tips to remove pesky water spots.
How to Remove Pet Stains
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A pet is like a member of the family -- one that occasionally has accidents indoors. Cleaning up pet stains is part of animal ownership, so follow these tips to undo what Fido does.
Not Just Rocks: The Geology Quiz
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Geologists study the processes and substances that form Earth. Most of those processes happen over millions of years, but this quiz only takes a few minutes! Find out how rock solid your knowledge of geology is.
How Iron and Steel Work
science.howstuffworks.com/iron.htm
The refining of iron ore is one of the most historically significant achievements of all time. Find out how iron gets turned into steel and what it's used for.
How Pyramids Work
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Pyramids are some of the most amazing structures ever created by man. Learn about pyramids and the technology used to construct the ancient pyramids.