why do
October 4th, 2011 at 05:24pm
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A yawn is a natural reflex that causes air to be inhaled and the eardrums to stretch. It is commonly accompanied by stretching, which is referred to as pandiculation. It occurs in humans and many animals. It commonly occurs when a person is tired, stressed or bored. We have all heard that yawning is contagious (you might even be yawning reading this), so let’s take a look at what causes people to yawn.
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Why Do People Yawn
September 15th, 2011 at 05:26pm
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Thanks, in part, to the popularity of military movies and television shows almost everyone is familiar with the fact that soldiers are required to salute. This is also true for many of the armed forces around the world, although the regulations and type of salute may differ. If you have ever wondered why soldiers salute, read on to find out.
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Why Do Soldiers Salute
August 18th, 2011 at 01:01pm
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Crickets are insects related to grasshoppers and katydids. They have flat bodies, hind jumping legs and long antennas. There are over 900 species of crickets and they can be found throughout much of the world. Some species have been known to bite humans, but they are generally harmless. They are best known for the chirping sound that they make during the night. If you have ever wondered why a cricket does this, continue reading to find the answer.
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Why Do Crickets Chirp at Night
July 20th, 2011 at 12:43am
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Most waves are caused by the wind blowing across the water. A wave occurs when the wind causes the surface of the water to rise as the wind pulls it and then gravity pulls it down. This causes the down and up movement of the waves that most people are familiar with. The size of the wave is generally influenced by the distance the wave travels and the strength and direction of the wind. The top of the wave is called the crest and the bottom is called the trough. When the crests break on the surface of the water they are called whitecaps. But, why do waves break when they reach the shore? Read on to find out.
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Why Do Waves Break
June 8th, 2011 at 12:56pm
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A nail is a hard metal or alloy that is pin-shaped and used to fasten materials such as wood and metal together. They come in a variety or lengths and thicknesses and are typically made of steel. Nails are often coated or galvanized to make them corrosion resistant. Nails have been used for centuries and their history dates all the way back to Biblical times. The one downside to nails is that eventually they rust and become useless. Why do nails rust? Read on to find out.
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Why Do Nails Rust
May 15th, 2011 at 12:10pm
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Ice baths have become an important part of exercise and recovery in the sporting arena. Many famous athletes use ice baths as part of their training regimes. Ice baths are exactly what they sound like, a bath like container filled with water and ice. The temperature in the bath needs to be between 12 and 14 degrees Celsius to be effective. Many top athletes use them as a way to help their body better recover from their training activities and match play. It is most often used by athletes that do a lot of running such as football players and triathlon athletes.
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Why do Athletes Take Ice Baths
May 9th, 2011 at 01:14pm
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Twinkle, Twinkle little star is the line of a popular children’s song that parents and children all of the world sing every day, but have you ever stopped to wonder why stars twinkle at all? Most of us are aware that stars are giant gaseous stellar bodies that are billions of light years away from the earth. We know that we see the light years after it has been emitted from the star, but why does it seem as if it twinkles? The answer to this question is in the article below.
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Why do Stars Twinkle
January 26th, 2010 at 12:01am
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Pennies look bright and shiny when they are first produced but eventually turn brown over time. But why do pennies turn brown? This post will answer that question! I will then discuss whether or not you should clean pennies.
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Why Do Pennies Turn Brown
November 26th, 2009 at 12:15am
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Roast turkey has been eaten for Thanksgiving dinner since the early 1800′s. But why do we eat turkey on Thanksgiving? This post will try and answer that question!
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Why do we Eat Turkey on Thanksgiving
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