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10 Weird Creatures From the Mariana Trench

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The Mariana Trench is full of amazing, alien-looking sea life. Learn more about the weird creatures from the Marinana Trench at HowStuffWorks.

How Deep Is the Ocean?

science.howstuffworks.com/environmental/earth/oceanography/how-deep-is-ocean.htm

The ocean is so deep, it puts the height of Mount Everest to shame.

93% of People Can't Crush This General Science Knowledge Quiz. Can You?

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Science may not have been everyone's favorite subject in high school, but many of these facts are common knowledge. You're a true nerd if you can guess them all.

Why Did the Russians Seal Up the Deepest Hole in the World?

science.howstuffworks.com/engineering/civil/kola-superdeep-borehole.htm

The Kola Superdeep Borehole in Russia is the deepest hole in the world. It's deeper than the Mariana Trench and deeper than Mt. Everest is tall. Why did the Russians dig this deep, and why did they stop?

7 Hot Facts About the Pacific Ring of Fire

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The Pacific's Ring of Fire is a 25,000 mile long "ring" that's home to 75 percent of all the world's volcanic activity and 90 percent of the planet's earthquakes. So what makes this area so active?

Can You Score 27/35 on This Difficult World Geography Quiz?

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You Ghana love this! We just know it! The ultimate world geography quiz just for you! Andes let's see how well you do! Aim high! But you better know your geographical features, capitals and landmarks found all over the globe!

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 Much Do You Know About the Planet Earth?

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Earth is home to all sorts of plant and animal species, habitats, and climates. Put your knowledge of planet Earth to the test with this quiz!

Dive deep into the ultimate submarine quiz!

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For centuries, humankind gazed upon the ocean's waves and wondered what it would be like to travel beneath the surface. Now, submarines are common all over the world. How much do you know about these amazing submersible machines?

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