The Great Barrier Reef: Its Description, Residents and Struggles
There are great mountains, forests and rainforests, but nothing is quite like the Great Barrier Reef. Learn more about Australia’s aquatic …
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Homework Help & Study Guides
Showing guides and explainers filed under Homework Help & Study Guides.
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How and Why Was Mount Rushmore Built? U.S. Presidents, History and Art
You may have heard of the “Seven Wonders of the Ancient World.” One of the great wonders is in the United States in an unlikely place, South Dakota—in …
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Types, Examples and Definitions of Symbiotic Relationships in Nature
A relationship—sometimes defined as intimate—between living creatures that feed, protect or are helped by another species is called a symbiotic …
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Differences and Similarities in the Lives of North American Indigenous People
You have heard about cowboys and Indians and the controversial “Redskins” football team, but the real North American Native Americans know what it …
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Uncle Sam: History and Facts of a Unique American National Symbol
You’ve seen the stern-looking, white-bearded man on posters, t-shirts and other Americana, but do you really know who Uncle Sam is or how this …
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The Science of Muscles: Learning about How Muscles Are Built and How to Train Safely
Learn about building muscle whether you want to understand more for science class or for your own body training goals. When it comes to muscles, you …
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Understanding the Dynamics of Flight: How Do Planes Take Off and Stay in the Air?
Just over 100 years ago, gliders were suspect and no one could foresee how a passenger vehicle could fly. Now, although millions of people travel by …
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Learn About Christopher Columbus - Why Do We Celebrate Columbus Day?
Wondering what Columbus Day is all about and whether Christopher Columbus actually discovered America? Learn the history of this famous explorer …
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Is There a Cure for the Common Cold? Are Colds Caused by Viruses or Bacteria?
A virus is so efficient, only 24 hours after a single virus particle enters your nose, you’re sick! Learn about causes, symptoms and remedies for the …
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Learn about Autumn Leaves: Understanding Why Trees Turn Red, Yellow, Orange, Gold, Purple and Brown in the Fall
What makes the leaves turn colors and how do they tell time? This has been the proverbial question for many nature seekers every year.
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