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There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

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The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..

Human Nervous System
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The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

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The Water Cycle

The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

Plant Water Regulation
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Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

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