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Earth

en.wikipedia.org/wiki/Earth

Earth is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical ...

What Is Earth? | NASA

www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-earth-58.html

Earth is our home planet. Scientists believe Earth and its moon formed around the same time as the rest of the solar system. They think that was about 4.5 billion  ...

Planet Earth: Facts About Its Orbit, Atmosphere & Size - Space.com

www.space.com/54-earth-history-composition-and-atmosphere.html

Dec 11, 2014 ... Earth is the only planet known to support life. Learn about Earth science facts and the planet's interior composition, surface and atmosphere.

Earth - Educational facts and history of the planet Earth.

nineplanets.org/earth.html

Earth is the third planet from the Sun and the fifth largest: Planet Profile. orbit: 149,600,000 km (1.00 AU) from Sun diameter: 12,756.3 km mass: 5.972e24 kg ...

Planet Earth, Planet Earth Information, Facts, News, Photos - Science

science.nationalgeographic.com/science/space/solar-system/earth/

Get information, facts, photos, news, videos, and more about planet Earth and its role in the solar system from National Geographic.

Earth Facts - Interesting Facts about Planet Earth - Space Facts

space-facts.com/earth/

Earth is the third planet from the Sun and is the largest of the terrestrial planets. The Earth is the only planet in our solar system not to be named after a Greek or ...

What is Earth made of? | Cool Cosmos

coolcosmos.ipac.caltech.edu/ask/58-What-is-Earth-made-of-

The Earth is made out of many things. Deep inside Earth, near its center, lies Earth's core which is mostly made up of nickel and iron. Above the core is Earth's  ...

Planet Earth - Universe Today

www.universetoday.com/14367/planet-earth/

May 26, 2016 ... In addition to being the birthplace of humanity and the cradle of human civilization, Earth is the only known planet in our Solar System that is ...

www.ask.com/youtube?q=What Is The Earth?&v=nt6ab7BTlgE
Aug 28, 2014 ... SOURCES and LINKS TO LEARN MORE ARE BELOW! my twitter: http://www. twitter.com/tweetsauce my instagram: ...

10 Interesting Facts About Earth - Universe Today

www.universetoday.com/14382/10-interesting-facts-about-planet-earth/

May 27, 2016 ... We've lived on planet Earth all of our lives, but how much does the average person know about the planet that's beneath our feet?

Answers
the world
Globally, the 20th century was marked by: (a) two devastating world wars; (b) the Great Depression of the 1930s; (c) the end of vast colonial empires.