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This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

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Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

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Regulation of Organic Metabolism, Growth and Energy Balance

The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

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DNA Structure & DNA Replication

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

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The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..

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This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..