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This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

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Pollution in Freshwater Ecosystems

There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..

Bryophytes
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Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..

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The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

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