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Homologous vs. Analogous Structures
Homologous and analogous structures show structural similarities between animals through genetic sequencing. Learn the science behind this biological fact!
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What Was the Monroe Doctrine?
The Monroe Doctrine was originally a statement of intent for America to separate itself from European affairs. Learn how it came to govern foreign policy here!
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Newton’s First Law of Motion
Newton’s first law of motion states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted on by a net external force.
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The Roman Republic: Part One
The reign of the Romans remains one of the most influential empires of all time. Learn about the Roman Republic and its governmental positions here!
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The Roman Republic: Part Two
The expansion of Roman territory also meant longer consulships and offers of citizenship to foreigners. Learn about more important changes in Rome Part Two!
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What Are Primary and Secondary Resources?
Primary sources are usually original works from a specific time frame, but secondary sources comment on primary sources. Learn more about reliable sources!
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Asexual Reproduction
Asexual reproduction occurs with a single organism that self-copies its DNA and clones itself to reproduce. Learn more about asexual reproduction here!
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Lactose Intolerance
Lactose intolerance is the body’s inability to break down lactose, the sugar found in dairy. Learn about causes and the predisposition for this intolerance here!
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Renewable and Nonrenewable Resources
Renewable and nonrenewable resources are essential to life on Earth but must be used carefully. Learn about the differences between these resources here!
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Cardiac Tamponade
Cardiac tamponade occurs when fluid around the heart exerts pressure, resulting in Beck's Triad of symptoms. Learn to diagnose and confirm this condition!