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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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Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

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Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..

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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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While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..