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The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..

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Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

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In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

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Gene Action – Operon Hypothesis

Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

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New Zealand’s Unique Flora

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,..

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