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Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..

Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

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