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The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..

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Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..

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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 human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..