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The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..

Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..

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

If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..

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