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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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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

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Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

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Geological Periods

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

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A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

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