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What Is the Associative Property of Mathematics?

science.howstuffworks.com/math-concepts/associative-property.htm

When pursuing an education in mathematics and algebra, one of the earliest and most important concepts to understand is the associative property, also known as the associative law.

Are all blood types needed for for donation?

health.howstuffworks.com/human-body/systems/circulatory/question593.htm

I would like to donate blood and keep hearing about which blood types are needed most. How do human blood types work?

How Folate Works

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Folate is a vitamin that is crucial to human growth. Find out what your RDA of folate is and the serious effects of a folate deficiency.

10 of the Oldest Continuously Inhabited Cities in the World

history.howstuffworks.com/world-history/oldest-city-in-world.htm

It's hard to nail down the oldest city in the world. Some say it's Damascus, Syria, while others suggest it's Jericho, in the West Bank. So which is older?

What Is the Oldest Country in the World? Depends on Your Criteria

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With constantly changing borders and governments, identifying the oldest countries in the world is tricky work.

Vitamins

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Vitamins are vital nutrients that your body needs to function and fight off diseases. Learn about the various vitamins and how much your body needs.

Can You Correctly Guess the Locations of These Ancient Civilizations?

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As far back as 5,000 years ago, powerful civilizations rose and fell. Mesopotamia. Ancient Persia. The Incas. While you may recognize these names, do you know where these ancient peoples once resided?

How to Find the Area of a Triangle

science.howstuffworks.com/math-concepts/area-of-a-triangle.htm

With its three sides and three angles, the triangle is one of the most basic shapes in geometry. This means calculating the area of a triangle is a fundamental skill in geometry, with multiple formulas available depending on the type of triangle and the given data.

How Biotin Works

health.howstuffworks.com/wellness/food-nutrition/vitamin-supplements/biotin.htm

Biotin is a vitamin that aids in the metabolism of food. Learn how it works, how much of it you should eat and which foods contain biotin.

How Absolute Value Works in Equations and Graphs

science.howstuffworks.com/math-concepts/absolute-value.htm

Absolute value is a mathematical concept often used in conjunction with a number line or graph to represent the relative value from zero (modulus). To illustrate this idea in a different way, the absolute value of a number can be closely related to distance in the physical world.

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