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Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

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Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..

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Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..

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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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Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

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A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..